79800784 has 20 divisors (see below), whose sum is σ = 176701984. Its totient is φ = 34200288.

The previous prime is 79800781. The next prime is 79800797. The reversal of 79800784 is 48700897.

It is a self number, because there is not a number n which added to its sum of digits gives 79800784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79800781) 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 3 ways as a sum of consecutive naturals, for example, 356142 + ... + 356365.

Almost surely, 2^79800784 is an apocalyptic number.

It is an amenable number.

79800784 is an abundant number, since it is smaller than the sum of its proper divisors (96901200).

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

79800784 is a wasteful number, since it uses less digits than its factorization.

79800784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712522 (or 712516 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 79800784 is about 8933.1284553621. The cubic root of 79800784 is about 430.5289758249.

The spelling of 79800784 in words is "seventy-nine million, eight hundred thousand, seven hundred eighty-four".