Compare 399 vs 400
| Property | 399 | 400 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 2 |
| Total factors | 3 | 6 |
| Prime factorization | 31 × 71 × 191 | 24 × 52 |
| Prime factorization | 3 × 7 × 19 | 2 × 2 × 2 × 2 × 5 × 5 |
| Divisors count | 8 | 15 |
| Divisors | 1, 3, 7, 19, 21, 57, 133, 399 | 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400 |
| Number of properties | 0 | 0 |
| Roman numberals | CCCXCIX | CD |
| Base 2 | 1100011112 | 1100100002 |
| Base 3 | 1122103 | 1122113 |
| Base 4 | 120334 | 121004 |
| Base 5 | 30445 | 31005 |
| Base 6 | 15036 | 15046 |
| Base 7 | 11107 | 11117 |
| Base 8 | 6178 | 6208 |
| Base 9 | 4839 | 4849 |
| Base 10 | 39910 | 40010 |
| Base 11 | 33311 | 33411 |
| Base 12 | 29312 | 29412 |
| Base 13 | 24913 | 24a13 |
| Base 14 | 20714 | 20814 |
| Base 15 | 1b915 | 1ba15 |
| Base 16 | 18f16 | 19016 |