Numbers / 589

The Number 589

589 is composite: factorization 19 × 31. That gives 589 exactly 4 divisors: 1, 19, 31, 589. 589's proper divisors total just 51, 538 short of 589, the deficient case most of 589's neighbors share too. 589 has a digit sum of 22; for 589, the digital root works out to 4. 589 shares no factor with 2-12; 589's own divisors start beyond that range. 589 is 1001001101 in binary and 24D in hex; as a Roman numeral it's DLXXXIX.