79713091 has 4 divisors (see below), whose sum is σ = 79731184. Its totient is φ = 79695000.

The previous prime is 79713079. The next prime is 79713097. The reversal of 79713091 is 19031797.

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

It is a cyclic number.

It is not a de Polignac number, because 79713091 - 2¹³ = 79704899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79713091.

It is not an unprimeable number, because it can be changed into a prime (79713097) 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, 2341 + ... + 12841.

It is an arithmetic number, because the mean of its divisors is an integer number (19932796).

Almost surely, 2^79713091 is an apocalyptic number.

79713091 is a deficient number, since it is larger than the sum of its proper divisors (18093).

79713091 is a wasteful number, since it uses less digits than its factorization.

79713091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18092.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 79713091 is about 8928.2188033224. The cubic root of 79713091 is about 430.3712154060.

The spelling of 79713091 in words is "seventy-nine million, seven hundred thirteen thousand, ninety-one".