79942972 has 12 divisors (see below), whose sum is σ = 140396536. Its totient is φ = 39829680.

The previous prime is 79942949. The next prime is 79942981. The reversal of 79942972 is 27924997.

It is a happy number.

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, 34179 + ... + 36442.

Almost surely, 2^79942972 is an apocalyptic number.

It is an amenable number.

79942972 is a deficient number, since it is larger than the sum of its proper divisors (60453564).

79942972 is a wasteful number, since it uses less digits than its factorization.

79942972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70908 (or 70906 counting only the distinct ones).

The product of its digits is 571536, while the sum is 49.

The square root of 79942972 is about 8941.0833795464. The cubic root of 79942972 is about 430.7845277502.

The spelling of 79942972 in words is "seventy-nine million, nine hundred forty-two thousand, nine hundred seventy-two".