79919956 has 12 divisors (see below), whose sum is σ = 140928480. Its totient is φ = 39654680.

The previous prime is 79919933. The next prime is 79919971. The reversal of 79919956 is 65991997.

It is a junction number, because it is equal to n+sod(n) for n = 79919897 and 79919906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75736 + ... + 76783.

It is an arithmetic number, because the mean of its divisors is an integer number (11744040).

Almost surely, 2^79919956 is an apocalyptic number.

It is an amenable number.

79919956 is a deficient number, since it is larger than the sum of its proper divisors (61008524).

79919956 is a wasteful number, since it uses less digits than its factorization.

79919956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152654 (or 152652 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 55.

The square root of 79919956 is about 8939.7961945449. The cubic root of 79919956 is about 430.7431820754.

The spelling of 79919956 in words is "seventy-nine million, nine hundred nineteen thousand, nine hundred fifty-six".