Compare 399987 vs 399998
| Property | 399987 | 399998 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 32 × 72 × 9071 | 21 × 1999991 |
| Prime factorization | 3 × 3 × 7 × 7 × 907 | 2 × 199999 |
| Divisors count | 18 | 4 |
| Divisors | 1, 3, 7, 9, 21, 49, 63, 147, 441, 907, 2721, 6349, 8163, 19047, 44443, 57141, 133329, 399987 | 1, 2, 199999, 399998 |
| Number of properties | 0 | 1 |
| Semiprimes | 87553rd | |
| Roman numberals | ||
| Base 2 | 11000011010011100112 | 11000011010011111102 |
| Base 3 | 2020222001003 | 2020222002023 |
| Base 4 | 12012213034 | 12012213324 |
| Base 5 | 1002444225 | 1002444435 |
| Base 6 | 123234436 | 123235026 |
| Base 7 | 32541007 | 32541147 |
| Base 8 | 14151638 | 14151768 |
| Base 9 | 6686109 | 6686229 |
| Base 10 | 39998710 | 39999810 |
| Base 11 | 25357511 | 25358511 |
| Base 12 | 17358312 | 17359212 |
| Base 13 | 1100a313 | 1100b113 |
| Base 14 | a5aa714 | a5ab414 |
| Base 15 | 7d7ac15 | 7d7b815 |
| Base 16 | 61a7316 | 61a7e16 |