79726913 has 4 divisors (see below), whose sum is σ = 91116480. Its totient is φ = 68337348.

The previous prime is 79726909. The next prime is 79726937. The reversal of 79726913 is 31962797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79726913 - 2² = 79726909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79726613) 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, 5694773 + ... + 5694786.

It is an arithmetic number, because the mean of its divisors is an integer number (22779120).

Almost surely, 2^79726913 is an apocalyptic number.

It is an amenable number.

79726913 is a deficient number, since it is larger than the sum of its proper divisors (11389567).

79726913 is a wasteful number, since it uses less digits than its factorization.

79726913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11389566.

The product of its digits is 142884, while the sum is 44.

The square root of 79726913 is about 8928.9928323412. The cubic root of 79726913 is about 430.3960889748.

The spelling of 79726913 in words is "seventy-nine million, seven hundred twenty-six thousand, nine hundred thirteen".