The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+0444 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
Ef or Fe (Ф ф; italics: Ф ф) is a Cyrillic letter, commonly representing the voiceless labiodental fricative /f/, like the pronunciation of ⟨f⟩ in "fill, flee, or fall". The Cyrillic letter Ef is romanized as ⟨f⟩.
Representations
System
Representation (click value to copy)
Nº
1092
UTF-8
D1 84
UTF-16
04 44
UTF-32
00 00 04 44
URL-Quoted
%D1%84
HTML hex reference
ф
Wrong windows-1252 Mojibake
Ñ„
HTML named entity
ф
Encoding: BIG5 (hex bytes)
C7 DD
Encoding: BIG5HKSCS (hex bytes)
C8 6A
Encoding: CP855 (hex bytes)
AA
Encoding: CP866 (hex bytes)
E4
Encoding: CP932 (hex bytes)
84 86
Encoding: CP949 (hex bytes)
AC E6
Encoding: CP950 (hex bytes)
C7 DD
Encoding: CP1125 (hex bytes)
E4
Encoding: CP1251 (hex bytes)
F4
Encoding: EUC_JP (hex bytes)
A7 E6
Encoding: EUC_JIS_2004 (hex bytes)
A7 E6
Encoding: EUC_JISX0213 (hex bytes)
A7 E6
Encoding: EUC_KR (hex bytes)
AC E6
Encoding: GB2312 (hex bytes)
A7 E6
Encoding: GBK (hex bytes)
A7 E6
Encoding: GB18030 (hex bytes)
A7 E6
Encoding: HZ (hex bytes)
7E 7B 27 66 7E 7D
Encoding: ISO2022_JP (hex bytes)
1B 24 42 27 66 1B 28 42
Encoding: ISO2022_JP_1 (hex bytes)
1B 24 42 27 66 1B 28 42
Encoding: ISO2022_JP_2 (hex bytes)
1B 24 42 27 66 1B 28 42
Encoding: ISO2022_JP_2004 (hex bytes)
1B 24 42 27 66 1B 28 42
Encoding: ISO2022_JP_3 (hex bytes)
1B 24 42 27 66 1B 28 42
Encoding: ISO2022_JP_EXT (hex bytes)
1B 24 42 27 66 1B 28 42
Encoding: ISO2022_KR (hex bytes)
1B 24 29 43 0E 2C 66 0F
Encoding: ISO8859_5 (hex bytes)
E4
Encoding: JOHAB (hex bytes)
DE E6
Encoding: KOI8_R (hex bytes)
C6
Encoding: KOI8_T (hex bytes)
C6
Encoding: KOI8_U (hex bytes)
C6
Encoding: KZ1048 (hex bytes)
F4
Encoding: MAC_CYRILLIC (hex bytes)
F4
Encoding: PTCP154 (hex bytes)
F4
Encoding: SHIFT_JIS (hex bytes)
84 86
Encoding: SHIFT_JIS_2004 (hex bytes)
84 86
Encoding: SHIFT_JISX0213 (hex bytes)
84 86
Encoding: CP1025 (hex bytes)
8C
Encoding: CP1123 (hex bytes)
8C
LATEX
\cyrchar\cyrf
Adobe Glyph List
afii10086
Adobe Glyph List
efcyrillic
digraph
f=
RFC 5137
\u'0444'
Bash and Zsh inside echo -e
\u0444
C and C++
\u0444
C#
\u0444
CSS
\000444
Excel
=UNICHAR(1092)
Go
\u0444
JavaScript
\u0444
Modern JavaScript since ES6
\u{444}
JSON
\u0444
Java
\u0444
Lua
\u{444}
Matlab
char(1092)
Perl
"\x{444}"
PHP
\u{444}
PostgreSQL
U&'\0444'
PowerShell
`u{444}
Python
\u0444
Ruby
\u{444}
Rust
\u{444}
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