79440912 has 50 divisors (see below), whose sum is σ = 229928798. Its totient is φ = 26479872.

The previous prime is 79440859. The next prime is 79440917. The reversal of 79440912 is 21904497.

It can be written as a sum of positive squares in only one way, i.e., 60466176 + 18974736 = 7776^2 + 4356^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 29353 + ... + 31944.

Almost surely, 2^79440912 is an apocalyptic number.

79440912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

79440912 is an abundant number, since it is smaller than the sum of its proper divisors (150487886).

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

79440912 is a wasteful number, since it uses less digits than its factorization.

79440912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61317 (or 61302 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 79440912 is about 8912.9631436464. The cubic root of 79440912 is about 429.8808250951.

The spelling of 79440912 in words is "seventy-nine million, four hundred forty thousand, nine hundred twelve".