79785792 has 42 divisors (see below), whose sum is σ = 228693218. Its totient is φ = 26595072.

The previous prime is 79785791. The next prime is 79785799. The reversal of 79785792 is 29758797.

It can be written as a sum of positive squares in only one way, i.e., 62346816 + 17438976 = 7896^2 + 4176^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79785791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68683 + ... + 69834.

Almost surely, 2^79785792 is an apocalyptic number.

79785792 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

79785792 is an abundant number, since it is smaller than the sum of its proper divisors (148907426).

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

79785792 is a wasteful number, since it uses less digits than its factorization.

79785792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138535 (or 138522 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 79785792 is about 8932.2892922251. The cubic root of 79785792 is about 430.5020132885.

The spelling of 79785792 in words is "seventy-nine million, seven hundred eighty-five thousand, seven hundred ninety-two".