79519791 has 8 divisors (see below), whose sum is σ = 114182320. Its totient is φ = 48935232.

The previous prime is 79519747. The next prime is 79519799. The reversal of 79519791 is 19791597.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79519791 - 2¹¹ = 79517743 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 79519791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79519799) 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, 1019446 + ... + 1019523.

It is an arithmetic number, because the mean of its divisors is an integer number (14272790).

Almost surely, 2^79519791 is an apocalyptic number.

79519791 is a deficient number, since it is larger than the sum of its proper divisors (34662529).

79519791 is a wasteful number, since it uses less digits than its factorization.

79519791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038985.

The product of its digits is 178605, while the sum is 48.

The square root of 79519791 is about 8917.3870051714. The cubic root of 79519791 is about 430.0230580749.

The spelling of 79519791 in words is "seventy-nine million, five hundred nineteen thousand, seven hundred ninety-one".