79440916 has 12 divisors (see below), whose sum is σ = 139799520. Its totient is φ = 39498200.

The previous prime is 79440859. The next prime is 79440917. The reversal of 79440916 is 61904497.

79440916 = 84² + 85² + ... + 620².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79440917) 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, 54760 + ... + 56191.

It is an arithmetic number, because the mean of its divisors is an integer number (11649960).

Almost surely, 2^79440916 is an apocalyptic number.

It is an amenable number.

79440916 is a deficient number, since it is larger than the sum of its proper divisors (60358604).

79440916 is a wasteful number, since it uses less digits than its factorization.

79440916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111134 (or 111132 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 79440916 is about 8912.9633680387. The cubic root of 79440916 is about 429.8808323102.

The spelling of 79440916 in words is "seventy-nine million, four hundred forty thousand, nine hundred sixteen".