| Property | Value |
|---|---|
| Codepoint | U+1D409 |
| Literal Character | 𝐉 |
| Name | MATHEMATICAL BOLD CAPITAL J |
| Control Character | no |
| Block | Mathematical Alphanumeric Symbols |
| Subblock | Transliteration signs |
| UTF-8 byte encoding | f0 9d 90 89 |
| UTF-16 byte encoding | d8 35 dc 09 (big endian) |
| HTML Entity | 𝐉 |
| Perl string literal | \x{1D409} |