79858916 has 24 divisors (see below), whose sum is σ = 143325504. Its totient is φ = 38918880.

The previous prime is 79858907. The next prime is 79858931. The reversal of 79858916 is 61985897.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33401 + ... + 35711.

It is an arithmetic number, because the mean of its divisors is an integer number (5971896).

Almost surely, 2^79858916 is an apocalyptic number.

It is an amenable number.

79858916 is a deficient number, since it is larger than the sum of its proper divisors (63466588).

79858916 is a wasteful number, since it uses less digits than its factorization.

79858916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531 (or 2529 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 53.

The square root of 79858916 is about 8936.3815943591. The cubic root of 79858916 is about 430.6334920732.

It can be divided in two parts, 7985891 and 6, that added together give a palindrome (7985897).

The spelling of 79858916 in words is "seventy-nine million, eight hundred fifty-eight thousand, nine hundred sixteen".