Numbers / 889

The Number 889

889 is composite: factorization 7 × 127. That gives 889 exactly 4 divisors: 1, 7, 127, 889. 889's proper divisors total just 135, 754 short of 889, the deficient case most of 889's neighbors share too. 889 has a digit sum of 25; for 889, the digital root works out to 7. 889: 7 all divide 889 evenly, out of 2-12. 889 is 1101111001 in binary and 379 in hex; as a Roman numeral it's DCCCLXXXIX.