Numbers / 985

The Number 985

985 is composite: factorization 5 × 197. That gives 985 exactly 4 divisors: 1, 5, 197, 985. 985's proper divisors total just 203, 782 short of 985, the deficient case most of 985's neighbors share too. 985 has a digit sum of 22; for 985, the digital root works out to 4. 985: 5 all divide 985 evenly, out of 2-12. 985 is 1111011001 in binary and 3D9 in hex; as a Roman numeral it's CMLXXXV.