Numbers / 447

The Number 447

447 is composite: factorization 3 × 149. That gives 447 exactly 4 divisors: 1, 3, 149, 447. 447's proper divisors total just 153, 294 short of 447, the deficient case most of 447's neighbors share too. 447 has a digit sum of 15; for 447, the digital root works out to 6. 447: 3 all divide 447 evenly, out of 2-12. 447 is 110111111 in binary and 1BF in hex; as a Roman numeral it's CDXLVII.