79400808 has 48 divisors (see below), whose sum is σ = 216012420. Its totient is φ = 26347776.

The previous prime is 79400773. The next prime is 79400821. The reversal of 79400808 is 80800497.

It can be written as a sum of positive squares in 2 ways, for example, as 70862724 + 8538084 = 8418^2 + 2922^2 .

It is a super-2 number, since 2×79400808² = 12608976622105728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14410 + ... + 19142.

Almost surely, 2^79400808 is an apocalyptic number.

It is an amenable number.

79400808 is an abundant number, since it is smaller than the sum of its proper divisors (136611612).

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

79400808 is a wasteful number, since it uses less digits than its factorization.

79400808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978 (or 4971 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 79400808 is about 8910.7131027769. The cubic root of 79400808 is about 429.8084742872.

It can be divided in two parts, 79400 and 808, that added together give a palindrome (80208).

The spelling of 79400808 in words is "seventy-nine million, four hundred thousand, eight hundred eight".