79023913 has 2 divisors, whose sum is σ = 79023914. Its totient is φ = 79023912.

The previous prime is 79023911. The next prime is 79023941. The reversal of 79023913 is 31932097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78801129 + 222784 = 8877^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 79023913 - 2¹ = 79023911 is a prime.

Together with 79023911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79023911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39511956 + 39511957.

It is an arithmetic number, because the mean of its divisors is an integer number (39511957).

Almost surely, 2^79023913 is an apocalyptic number.

It is an amenable number.

79023913 is a deficient number, since it is larger than the sum of its proper divisors (1).

79023913 is an equidigital number, since it uses as much as digits as its factorization.

79023913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 79023913 is about 8889.5395268821. The cubic root of 79023913 is about 429.1273323718.

The spelling of 79023913 in words is "seventy-nine million, twenty-three thousand, nine hundred thirteen".