Source: Noto Sans Math

U+2247 Neither Approximately Nor Actually Equal To

U+2247 was added in Unicode version 1.1 in 1993. It belongs to the block U+2200 to U+22FF Mathematical Operators in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Math Symbol and is commonly used, that is, in no specific script.

The glyph is a canonical composition of the glyphs Approximately Equal To, Combining Long Solidus Overlay. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is mirrored. The word that U+2247 forms with similar adjacent characters prevents a line break inside it.

The Wikipedia has the following information about this codepoint:

An approximation is anything that is intentionally similar but not exactly equal to something else.

Representations

System	Representation
Nº	8775
UTF-8	E2 89 87
UTF-16	22 47
UTF-32	00 00 22 47
URL-Quoted	%E2%89%87
HTML hex reference	≇
Wrong windows-1252 Mojibake	â‰‡
HTML named entity	&NotTildeFullEqual;
HTML named entity	&ncong;
Encoding: GB18030 (hex bytes)	81 36 D6 35
L^AT_EX	\not\cong

Elsewhere

Complete Record

Property	Value
Age (age)	1.1 (1993)
Unicode Name (na)	NEITHER APPROXIMATELY NOR ACTUALLY EQUAL TO
Unicode 1 Name (na1)	—
Block (blk)	Mathematical Operators
General Category (gc)	Math Symbol
Script (sc)	Common
Bidirectional Category (bc)	Other Neutral
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	canonical
Decomposition Mapping (dm)	Approximately Equal To Combining Long Solidus Overlay
Lowercase (Lower)	✘︎
Simple Lowercase Mapping (slc)	Neither Approximately Nor Actually Equal To
Lowercase Mapping (lc)	Neither Approximately Nor Actually Equal To
Uppercase (Upper)	✘︎
Simple Uppercase Mapping (suc)	Neither Approximately Nor Actually Equal To
Uppercase Mapping (uc)	Neither Approximately Nor Actually Equal To
Simple Titlecase Mapping (stc)	Neither Approximately Nor Actually Equal To
Titlecase Mapping (tc)	Neither Approximately Nor Actually Equal To
Case Folding (cf)	Neither Approximately Nor Actually Equal To
ASCII Hex Digit (AHex)	✘︎
Alphabetic (Alpha)	✘︎
Bidi Control (Bidi_C)	✘︎
Bidi Mirrored (Bidi_M)	✔︎
Composition Exclusion (CE)	✘︎
Case Ignorable (CI)	✘︎
Changes When Casefolded (CWCF)	✘︎
Changes When Casemapped (CWCM)	✘︎
Changes When NFKC Casefolded (CWKCF)	✘︎
Changes When Lowercased (CWL)	✘︎
Changes When Titlecased (CWT)	✘︎
Changes When Uppercased (CWU)	✘︎
Cased (Cased)	✘︎
Full Composition Exclusion (Comp_Ex)	✘︎
Default Ignorable Code Point (DI)	✘︎
Dash (Dash)	✘︎
Deprecated (Dep)	✘︎
Diacritic (Dia)	✘︎
Emoji Modifier Base (EBase)	✘︎
Emoji Component (EComp)	✘︎
Emoji Modifier (EMod)	✘︎
Emoji Presentation (EPres)	✘︎
Emoji (Emoji)	✘︎
Extender (Ext)	✘︎
Extended Pictographic (ExtPict)	✘︎
FC NFKC Closure (FC_NFKC)	Neither Approximately Nor Actually Equal To
Grapheme Cluster Break (GCB)	Any
Grapheme Base (Gr_Base)	✔︎
Grapheme Extend (Gr_Ext)	✘︎
Grapheme Link (Gr_Link)	✘︎
Hex Digit (Hex)	✘︎
Hyphen (Hyphen)	✘︎
ID Continue (IDC)	✘︎
ID Start (IDS)	✘︎
IDS Binary Operator (IDSB)	✘︎
IDS Trinary Operator and (IDST)	✘︎
IDSU (IDSU)	0
ID_Compat_Math_Continue (ID_Compat_Math_Continue)	0
ID_Compat_Math_Start (ID_Compat_Math_Start)	0
Ideographic (Ideo)	✘︎
InCB (InCB)	None
Indic Mantra Category (InMC)	—
Indic Positional Category (InPC)	NA
Indic Syllabic Category (InSC)	Other
Jamo Short Name (JSN)	—
Join Control (Join_C)	✘︎
Logical Order Exception (LOE)	✘︎
Modifier Combining Mark (MCM)	✘︎
Math (Math)	✔︎
Noncharacter Code Point (NChar)	✘︎
NFC Quick Check (NFC_QC)	Yes
NFD Quick Check (NFD_QC)	No
NFKC Casefold (NFKC_CF)	Neither Approximately Nor Actually Equal To
NFKC Quick Check (NFKC_QC)	Yes
NFKC_SCF (NFKC_SCF)	Neither Approximately Nor Actually Equal To
NFKD Quick Check (NFKD_QC)	No
Other Alphabetic (OAlpha)	✘︎
Other Default Ignorable Code Point (ODI)	✘︎
Other Grapheme Extend (OGr_Ext)	✘︎
Other ID Continue (OIDC)	✘︎
Other ID Start (OIDS)	✘︎
Other Lowercase (OLower)	✘︎
Other Math (OMath)	✘︎
Other Uppercase (OUpper)	✘︎
Prepended Concatenation Mark (PCM)	✘︎
Pattern Syntax (Pat_Syn)	✔︎
Pattern White Space (Pat_WS)	✘︎
Quotation Mark (QMark)	✘︎
Regional Indicator (RI)	✘︎
Radical (Radical)	✘︎
Sentence Break (SB)	Other
Soft Dotted (SD)	✘︎
Sentence Terminal (STerm)	✘︎
Terminal Punctuation (Term)	✘︎
Unified Ideograph (UIdeo)	✘︎
Variation Selector (VS)	✘︎
Word Break (WB)	Other
White Space (WSpace)	✘︎
XID Continue (XIDC)	✘︎
XID Start (XIDS)	✘︎
Expands On NFC (XO_NFC)	✘︎
Expands On NFD (XO_NFD)	✔︎
Expands On NFKC (XO_NFKC)	✘︎
Expands On NFKD (XO_NFKD)	✔︎
Bidi Paired Bracket (bpb)	Neither Approximately Nor Actually Equal To
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	neutral
Hangul Syllable Type (hst)	Not Applicable
ISO 10646 Comment (isc)	—
Joining Group (jg)	No_Joining_Group
Joining Type (jt)	Non Joining
Line Break (lb)	Alphabetic
Numeric Type (nt)	none
Numeric Value (nv)	not a number
Simple Case Folding (scf)	Neither Approximately Nor Actually Equal To
Script Extension (scx)
Vertical Orientation (vo)	R