This character is a Decimal Number and is mainly used in the Kannada script. It is also used in the scripts Nandinagari, Tulu-Tigalari. The codepoint has the decimal value 9.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. This number joins with other adjacent letters and numbers to form a word. U+0CEF forms a number with similar characters, which prevents a line break inside it. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
9 (nine) is the natural number following 8 and preceding 10.
Representations
System
Representation (click value to copy)
Nº
3311
UTF-8
E0 B3 AF
UTF-16
0C EF
UTF-32
00 00 0C EF
URL-Quoted
%E0%B3%AF
HTML hex reference
೯
Wrong windows-1252 Mojibake
೯
Encoding: GB18030 (hex bytes)
81 32 B3 35
RFC 5137
\u'0CEF'
Bash and Zsh inside echo -e
\u0CEF
C and C++
\u0CEF
C#
\u0CEF
CSS
\000CEF
Excel
=UNICHAR(3311)
Go
\u0CEF
JavaScript
\u0CEF
Modern JavaScript since ES6
\u{cef}
JSON
\u0CEF
Java
\u0CEF
Lua
\u{CEF}
Matlab
char(3311)
Perl
"\x{CEF}"
PHP
\u{cef}
PostgreSQL
U&'\0CEF'
PowerShell
`u{CEF}
Python
\u0CEF
Ruby
\u{cef}
Rust
\u{cef}
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