79737791 has 16 divisors (see below), whose sum is σ = 95178240. Its totient is φ = 65355360.

The previous prime is 79737773. The next prime is 79737793. The reversal of 79737791 is 19773797.

It is a happy number.

It is not a de Polignac number, because 79737791 - 2¹⁸ = 79475647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79737793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19886 + ... + 23556.

It is an arithmetic number, because the mean of its divisors is an integer number (5948640).

Almost surely, 2^79737791 is an apocalyptic number.

79737791 is a deficient number, since it is larger than the sum of its proper divisors (15440449).

79737791 is a wasteful number, since it uses less digits than its factorization.

79737791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814.

The product of its digits is 583443, while the sum is 50.

The square root of 79737791 is about 8929.6019508151. The cubic root of 79737791 is about 430.4156626067.

The spelling of 79737791 in words is "seventy-nine million, seven hundred thirty-seven thousand, seven hundred ninety-one".