79540929 has 12 divisors (see below), whose sum is σ = 123730516. Its totient is φ = 48948192.

The previous prime is 79540883. The next prime is 79540933. The reversal of 79540929 is 92904597.

It can be written as a sum of positive squares in 2 ways, for example, as 7969329 + 71571600 = 2823^2 + 8460^2 .

It is not a de Polignac number, because 79540929 - 2¹¹ = 79538881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79540999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339802 + ... + 340035.

Almost surely, 2^79540929 is an apocalyptic number.

It is an amenable number.

79540929 is a deficient number, since it is larger than the sum of its proper divisors (44189587).

79540929 is a wasteful number, since it uses less digits than its factorization.

79540929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679856 (or 679853 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 79540929 is about 8918.5721390815. The cubic root of 79540929 is about 430.0611576975.

The spelling of 79540929 in words is "seventy-nine million, five hundred forty thousand, nine hundred twenty-nine".