79640388 has 24 divisors (see below), whose sum is σ = 206475360. Its totient is φ = 26546760.

The previous prime is 79640369. The next prime is 79640411. The reversal of 79640388 is 88304697.

It is a happy 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, 368598 + ... + 368813.

It is an arithmetic number, because the mean of its divisors is an integer number (8603140).

Almost surely, 2^79640388 is an apocalyptic number.

It is an amenable number.

79640388 is an abundant number, since it is smaller than the sum of its proper divisors (126834972).

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

79640388 is a wasteful number, since it uses less digits than its factorization.

79640388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737424 (or 737416 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 79640388 is about 8924.1463457297. The cubic root of 79640388 is about 430.2403343698.

The spelling of 79640388 in words is "seventy-nine million, six hundred forty thousand, three hundred eighty-eight".