79121216 has 28 divisors (see below), whose sum is σ = 157288992. Its totient is φ = 39489408.

The previous prime is 79121167. The next prime is 79121221. The reversal of 79121216 is 61212197.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67451 + ... + 68613.

It is an arithmetic number, because the mean of its divisors is an integer number (5617464).

Almost surely, 2^79121216 is an apocalyptic number.

It is an amenable number.

79121216 is a deficient number, since it is larger than the sum of its proper divisors (78167776).

79121216 is a wasteful number, since it uses less digits than its factorization.

79121216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 2228 counting only the distinct ones).

The product of its digits is 1512, while the sum is 29.

The square root of 79121216 is about 8895.0107363623. The cubic root of 79121216 is about 429.3033898418.

The spelling of 79121216 in words is "seventy-nine million, one hundred twenty-one thousand, two hundred sixteen".