79887844 has 27 divisors (see below), whose sum is σ = 144623451. Its totient is φ = 38612160.

The previous prime is 79887833. The next prime is 79887893. The reversal of 79887844 is 44878897.

The square root of 79887844 is 8938.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9998244 + 69889600 = 3162^2 + 8360^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 732862 + ... + 732970.

Almost surely, 2^79887844 is an apocalyptic number.

79887844 is the 8938-th square number.

It is an amenable number.

79887844 is a deficient number, since it is larger than the sum of its proper divisors (64735607).

79887844 is a wasteful number, since it uses less digits than its factorization.

79887844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 152 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 55.

The cubic root of 79887844 is about 430.6854831863.

The spelling of 79887844 in words is "seventy-nine million, eight hundred eighty-seven thousand, eight hundred forty-four".