79806972 has 24 divisors (see below), whose sum is σ = 212818816. Its totient is φ = 22801968.

The previous prime is 79806953. The next prime is 79806997. The reversal of 79806972 is 27960897.

It is a congruent number.

It is an unprimeable number.

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, 474958 + ... + 475125.

Almost surely, 2^79806972 is an apocalyptic number.

It is an amenable number.

79806972 is an abundant number, since it is smaller than the sum of its proper divisors (133011844).

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

79806972 is a wasteful number, since it uses less digits than its factorization.

79806972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950097 (or 950095 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 79806972 is about 8933.4747998749. The cubic root of 79806972 is about 430.5401037208.

The spelling of 79806972 in words is "seventy-nine million, eight hundred six thousand, nine hundred seventy-two".