| Factorisation | 109 × 1283 |
| Prime | no |
| Binary | 100010001001000111 |
| Hexadecimal | 0x22247 |
| Bit length | 18 |
| Digit sum | 32 |
| Digits spoken | one three nine eight four seven |
139847 closes the sequence 2139847, beginning at digit 2 of seven.
139847 falls below the cardinality of a PubMed record, a Canadian patent application, a European patent application. Those systems assign identifiers sequentially, so it necessarily holds one in each. This is a property of the registries, not of the number. The cardinalities are published here.