79981344 has 120 divisors (see below), whose sum is σ = 239667120. Its totient is φ = 26158464.

The previous prime is 79981289. The next prime is 79981351. The reversal of 79981344 is 44318997.

It is a self number, because there is not a number n which added to its sum of digits gives 79981344.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 152667 + ... + 153189.

It is an arithmetic number, because the mean of its divisors is an integer number (1997226).

Almost surely, 2^79981344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79981344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119833560).

79981344 is an abundant number, since it is smaller than the sum of its proper divisors (159685776).

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

79981344 is a wasteful number, since it uses less digits than its factorization.

79981344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 587 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 79981344 is about 8943.2289470862. The cubic root of 79981344 is about 430.8534411244.

The spelling of 79981344 in words is "seventy-nine million, nine hundred eighty-one thousand, three hundred forty-four".