Numbers / 749

The Number 749

749 is composite: factorization 7 × 107. That gives 749 exactly 4 divisors: 1, 7, 107, 749. 749's proper divisors total just 115, 634 short of 749, the deficient case most of 749's neighbors share too. 749 has a digit sum of 20; for 749, the digital root works out to 2. 749: 7 all divide 749 evenly, out of 2-12. 749 is 1011101101 in binary and 2ED in hex; as a Roman numeral it's DCCXLIX.