Numbers / 979

The Number 979

979 is composite: factorization 11 × 89. That gives 979 exactly 4 divisors: 1, 11, 89, 979. 979's proper divisors total just 101, 878 short of 979, the deficient case most of 979's neighbors share too. 979 is also a palindrome, since 979 reads identically forwards and backwards. 979 has a digit sum of 25; for 979, the digital root works out to 7. 979: 11 all divide 979 evenly, out of 2-12. 979 is 1111010011 in binary and 3D3 in hex; as a Roman numeral it's CMLXXIX.