76979972 has 12 divisors (see below), whose sum is σ = 134967756. Its totient is φ = 38417760.

The previous prime is 76979971. The next prime is 76979993. The reversal of 76979972 is 27997967.

It can be written as a sum of positive squares in 2 ways, for example, as 20939776 + 56040196 = 4576^2 + 7486^2 .

It is not an unprimeable number, because it can be changed into a prime (76979971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15623 + ... + 19950.

It is an arithmetic number, because the mean of its divisors is an integer number (11247313).

Almost surely, 2^76979972 is an apocalyptic number.

It is an amenable number.

76979972 is a deficient number, since it is larger than the sum of its proper divisors (57987784).

76979972 is a wasteful number, since it uses less digits than its factorization.

76979972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36118 (or 36116 counting only the distinct ones).

The product of its digits is 3000564, while the sum is 56.

The square root of 76979972 is about 8773.8231119621. The cubic root of 76979972 is about 425.3951977986.

The spelling of 76979972 in words is "seventy-six million, nine hundred seventy-nine thousand, nine hundred seventy-two".