79313929 has 4 divisors (see below), whose sum is σ = 79725076. Its totient is φ = 78902784.

The previous prime is 79313911. The next prime is 79313933. The reversal of 79313929 is 92931397.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50979600 + 28334329 = 7140^2 + 5323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79313929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79313939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205284 + ... + 205669.

It is an arithmetic number, because the mean of its divisors is an integer number (19931269).

Almost surely, 2^79313929 is an apocalyptic number.

It is an amenable number.

79313929 is a deficient number, since it is larger than the sum of its proper divisors (411147).

79313929 is a wasteful number, since it uses less digits than its factorization.

79313929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411146.

The product of its digits is 91854, while the sum is 43.

The square root of 79313929 is about 8905.8367939234. The cubic root of 79313929 is about 429.6516540605.

The spelling of 79313929 in words is "seventy-nine million, three hundred thirteen thousand, nine hundred twenty-nine".