79615940 has 24 divisors (see below), whose sum is σ = 167619480. Its totient is φ = 31765248.

The previous prime is 79615901. The next prime is 79615969. The reversal of 79615940 is 4951697.

It can be written as a sum of positive squares in 4 ways, for example, as 38962564 + 40653376 = 6242^2 + 6376^2 .

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, 3314 + ... + 13046.

It is an arithmetic number, because the mean of its divisors is an integer number (6984145).

Almost surely, 2^79615940 is an apocalyptic number.

It is an amenable number.

79615940 is an abundant number, since it is smaller than the sum of its proper divisors (88003540).

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

79615940 is a wasteful number, since it uses less digits than its factorization.

79615940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10151 (or 10149 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 79615940 is about 8922.7764737216. The cubic root of 79615940 is about 430.1963048162.

The spelling of 79615940 in words is "seventy-nine million, six hundred fifteen thousand, nine hundred forty".