79919955 has 24 divisors (see below), whose sum is σ = 140287680. Its totient is φ = 42082560.

The previous prime is 79919933. The next prime is 79919971. The reversal of 79919955 is 55991997.

It is not a de Polignac number, because 79919955 - 2⁵ = 79919923 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7686 + ... + 14795.

It is an arithmetic number, because the mean of its divisors is an integer number (5845320).

Almost surely, 2^79919955 is an apocalyptic number.

79919955 is a deficient number, since it is larger than the sum of its proper divisors (60367725).

79919955 is a wasteful number, since it uses less digits than its factorization.

79919955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22571 (or 22568 counting only the distinct ones).

The product of its digits is 1148175, while the sum is 54.

The square root of 79919955 is about 8939.7961386152. The cubic root of 79919955 is about 430.7431802789.

The spelling of 79919955 in words is "seventy-nine million, nine hundred nineteen thousand, nine hundred fifty-five".