169 (number)
169 is the natural number following one hundred sixty-eight and preceding one hundred seventy.
| 169 | |
|---|---|
| Cardinal | one hundred [and] sixty-nine |
| Ordinal | 169th |
| Factorization | |
| Roman numeral | CLXIX |
| Binary | 10101001 |
| Hexadecimal | A9 |
One hundred sixty-nine is one of the few squares to also be a centered hexagonal number. It is the sum of seven consecutive primes, 13 + 17 + 19 + 23 + 29 + 31 + 37.
See also one hundred sixty
For the year AD, see 169 AD.