79400844 has 24 divisors (see below), whose sum is σ = 205854320. Its totient is φ = 26466912.

The previous prime is 79400821. The next prime is 79400851. The reversal of 79400844 is 44800497.

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

It is a junction number, because it is equal to n+sod(n) for n = 79400799 and 79400808.

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, 367489 + ... + 367704.

Almost surely, 2^79400844 is an apocalyptic number.

It is an amenable number.

79400844 is an abundant number, since it is smaller than the sum of its proper divisors (126453476).

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

79400844 is a wasteful number, since it uses less digits than its factorization.

79400844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735206 (or 735198 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 79400844 is about 8910.7151228170. The cubic root of 79400844 is about 429.8085392450.

The spelling of 79400844 in words is "seventy-nine million, four hundred thousand, eight hundred forty-four".