79729656 has 16 divisors (see below), whose sum is σ = 199324200. Its totient is φ = 26576544.

The previous prime is 79729607. The next prime is 79729667. The reversal of 79729656 is 65692797.

It is a junction number, because it is equal to n+sod(n) for n = 79729599 and 79729608.

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, 1661011 + ... + 1661058.

Almost surely, 2^79729656 is an apocalyptic number.

It is an amenable number.

79729656 is an abundant number, since it is smaller than the sum of its proper divisors (119594544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79729656 is a wasteful number, since it uses less digits than its factorization.

79729656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322078 (or 3322074 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 51.

The square root of 79729656 is about 8929.1464317705. The cubic root of 79729656 is about 430.4010248360.

The spelling of 79729656 in words is "seventy-nine million, seven hundred twenty-nine thousand, six hundred fifty-six".