79906900 has 36 divisors (see below), whose sum is σ = 177440032. Its totient is φ = 31217760.

The previous prime is 79906859. The next prime is 79906901. The reversal of 79906900 is 960997.

79906900 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×79906900² = 12770225335220000, which contains 22 as substring.

79906900 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79906901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4992 + ... + 13591.

Almost surely, 2^79906900 is an apocalyptic number.

It is an amenable number.

79906900 is an abundant number, since it is smaller than the sum of its proper divisors (97533132).

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

79906900 is a wasteful number, since it uses less digits than its factorization.

79906900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18640 (or 18633 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 79906900 is about 8939.0659467307. The cubic root of 79906900 is about 430.7197249001.

The spelling of 79906900 in words is "seventy-nine million, nine hundred six thousand, nine hundred".