79844172 has 24 divisors (see below), whose sum is σ = 197262576. Its totient is φ = 25049088.

The previous prime is 79844161. The next prime is 79844209. The reversal of 79844172 is 27144897.

It is a happy number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 195493 + ... + 195900.

It is an arithmetic number, because the mean of its divisors is an integer number (8219274).

Almost surely, 2^79844172 is an apocalyptic number.

It is an amenable number.

79844172 is an abundant number, since it is smaller than the sum of its proper divisors (117418404).

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

79844172 is a wasteful number, since it uses less digits than its factorization.

79844172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391417 (or 391415 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 79844172 is about 8935.5566138881. The cubic root of 79844172 is about 430.6069884536.

The spelling of 79844172 in words is "seventy-nine million, eight hundred forty-four thousand, one hundred seventy-two".