79128914 has 16 divisors (see below), whose sum is σ = 126976248. Its totient is φ = 36851712.

The previous prime is 79128913. The next prime is 79128923. The reversal of 79128914 is 41982197.

It can be written as a sum of positive squares in 4 ways, for example, as 50879689 + 28249225 = 7133^2 + 5315^2 .

It is a super-2 number, since 2×79128914² = 12522770061638792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79128911) 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, 8699 + ... + 15294.

Almost surely, 2^79128914 is an apocalyptic number.

79128914 is a deficient number, since it is larger than the sum of its proper divisors (47847334).

79128914 is a wasteful number, since it uses less digits than its factorization.

79128914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24109.

The product of its digits is 36288, while the sum is 41.

The square root of 79128914 is about 8895.4434403238. The cubic root of 79128914 is about 429.3173122362.

The spelling of 79128914 in words is "seventy-nine million, one hundred twenty-eight thousand, nine hundred fourteen".