9999 (number)
9999 is the natural number following 9998 and preceding 10000.
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| Cardinal | nine thousand nine hundred ninety-nine | |||
| Ordinal | 9999th (nine thousand nine hundred ninety-ninth) | |||
| Factorization | 32 × 11 × 101 | |||
| Greek numeral | ,ΘϠϞΘ´ | |||
| Roman numeral | MXCMXCIX, or IXCMXCIX | |||
| Binary | 100111000011112 | |||
| Ternary | 1112011003 | |||
| Senary | 1141436 | |||
| Octal | 234178 | |||
| Duodecimal | 595312 | |||
| Hexadecimal | 270F16 | |||
9999 is an auspicious number in Chinese folklore. Many estimations of the rooms contained in the Forbidden City point to 9999. Chinese tomb contracts often involved being buried with 9999 coins, a practice related to Joss paper, as it was believed the dead would need that amount to buy the burial plot from the Earth goddess.
9999 is also the emergency telephone number in Oman.
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