79878408 has 32 divisors (see below), whose sum is σ = 202512960. Its totient is φ = 26250560.

The previous prime is 79878397. The next prime is 79878437. The reversal of 79878408 is 80487897.

It is a super-2 number, since 2×79878408² = 12761120129228928, which contains 22 as substring.

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, 21735 + ... + 25142.

It is an arithmetic number, because the mean of its divisors is an integer number (6328530).

Almost surely, 2^79878408 is an apocalyptic number.

It is an amenable number.

79878408 is an abundant number, since it is smaller than the sum of its proper divisors (122634552).

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

79878408 is a wasteful number, since it uses less digits than its factorization.

79878408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46957 (or 46953 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 79878408 is about 8937.4721258307. The cubic root of 79878408 is about 430.6685256283.

The spelling of 79878408 in words is "seventy-nine million, eight hundred seventy-eight thousand, four hundred eight".