79400856 has 16 divisors (see below), whose sum is σ = 198502200. Its totient is φ = 26466944.

The previous prime is 79400851. The next prime is 79400873. The reversal of 79400856 is 65800497.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79400851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654161 + ... + 1654208.

Almost surely, 2^79400856 is an apocalyptic number.

It is an amenable number.

79400856 is an abundant number, since it is smaller than the sum of its proper divisors (119101344).

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

79400856 is a wasteful number, since it uses less digits than its factorization.

79400856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308378 (or 3308374 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 79400856 is about 8910.7157961636. The cubic root of 79400856 is about 429.8085608976.

The spelling of 79400856 in words is "seventy-nine million, four hundred thousand, eight hundred fifty-six".