79991896 has 16 divisors (see below), whose sum is σ = 150102000. Its totient is φ = 39964704.

The previous prime is 79991827. The next prime is 79991897. The reversal of 79991896 is 69819997.

It is a self number, because there is not a number n which added to its sum of digits gives 79991896.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79991897) 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, 9805 + ... + 16003.

It is an arithmetic number, because the mean of its divisors is an integer number (9381375).

Almost surely, 2^79991896 is an apocalyptic number.

It is an amenable number.

79991896 is a deficient number, since it is larger than the sum of its proper divisors (70110104).

79991896 is a wasteful number, since it uses less digits than its factorization.

79991896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7818 (or 7814 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 58.

The square root of 79991896 is about 8943.8188711534. The cubic root of 79991896 is about 430.8723878995.

The spelling of 79991896 in words is "seventy-nine million, nine hundred ninety-one thousand, eight hundred ninety-six".