79372121 has 8 divisors (see below), whose sum is σ = 82036224. Its totient is φ = 76714560.

The previous prime is 79372091. The next prime is 79372123. The reversal of 79372121 is 12127397.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79372121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79372123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41441 + ... + 43313.

It is an arithmetic number, because the mean of its divisors is an integer number (10254528).

Almost surely, 2^79372121 is an apocalyptic number.

It is an amenable number.

79372121 is a deficient number, since it is larger than the sum of its proper divisors (2664103).

79372121 is a wasteful number, since it uses less digits than its factorization.

79372121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271.

The product of its digits is 5292, while the sum is 32.

The square root of 79372121 is about 8909.1032657614. The cubic root of 79372121 is about 429.7567057086.

The spelling of 79372121 in words is "seventy-nine million, three hundred seventy-two thousand, one hundred twenty-one".