| Name | MATHEMATICAL DOUBLE-STRUCK DIGIT FOUR |
| Unicode Version | 3.1 |
| Block（ブロック） | Mathematical Alphanumeric Symbols（数学用英数字記号） |
| Plane（面） | Supplementary Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | 𝟜 𝟜 |
| UTF-8 Encoding | 𝟜 f09d9f9c |
| UTF-16 Encoding | 𝟜 d835dfdc |
| UTF-32 Encoding | 𝟜 0001d7dc |