79900554 has 16 divisors (see below), whose sum is σ = 163699200. Its totient is φ = 25983840.

The previous prime is 79900519. The next prime is 79900559. The reversal of 79900554 is 45500997.

It is not an unprimeable number, because it can be changed into a prime (79900559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162154 + ... + 162645.

It is an arithmetic number, because the mean of its divisors is an integer number (10231200).

Almost surely, 2^79900554 is an apocalyptic number.

79900554 is an abundant number, since it is smaller than the sum of its proper divisors (83798646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79900554 is a wasteful number, since it uses less digits than its factorization.

79900554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324845.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 79900554 is about 8938.7109808965. The cubic root of 79900554 is about 430.7083223816.

The spelling of 79900554 in words is "seventy-nine million, nine hundred thousand, five hundred fifty-four".