79945904 has 10 divisors (see below), whose sum is σ = 154895220. Its totient is φ = 39972944.

The previous prime is 79945903. The next prime is 79945913. The reversal of 79945904 is 40954997.

It is not an unprimeable number, because it can be changed into a prime (79945903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498294 + ... + 2498325.

It is an arithmetic number, because the mean of its divisors is an integer number (15489522).

Almost surely, 2^79945904 is an apocalyptic number.

It is an amenable number.

79945904 is a deficient number, since it is larger than the sum of its proper divisors (74949316).

79945904 is a wasteful number, since it uses less digits than its factorization.

79945904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996627 (or 4996621 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 79945904 is about 8941.2473402764. The cubic root of 79945904 is about 430.7897941910.

The spelling of 79945904 in words is "seventy-nine million, nine hundred forty-five thousand, nine hundred four".