79724974 has 16 divisors (see below), whose sum is σ = 137465568. Its totient is φ = 33969312.

The previous prime is 79724947. The next prime is 79724999. The reversal of 79724974 is 47942797.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14037 + ... + 18880.

It is an arithmetic number, because the mean of its divisors is an integer number (8591598).

Almost surely, 2^79724974 is an apocalyptic number.

79724974 is a deficient number, since it is larger than the sum of its proper divisors (57740594).

79724974 is a wasteful number, since it uses less digits than its factorization.

79724974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33099.

The product of its digits is 889056, while the sum is 49.

The square root of 79724974 is about 8928.8842528056. The cubic root of 79724974 is about 430.3925997942.

The spelling of 79724974 in words is "seventy-nine million, seven hundred twenty-four thousand, nine hundred seventy-four".