79408940 has 24 divisors (see below), whose sum is σ = 179586960. Its totient is φ = 29320128.

The previous prime is 79408933. The next prime is 79408943. The reversal of 79408940 is 4980497.

It is not an unprimeable number, because it can be changed into a prime (79408943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152450 + ... + 152969.

It is an arithmetic number, because the mean of its divisors is an integer number (7482790).

Almost surely, 2^79408940 is an apocalyptic number.

It is an amenable number.

79408940 is an abundant number, since it is smaller than the sum of its proper divisors (100178020).

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

79408940 is a wasteful number, since it uses less digits than its factorization.

79408940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305441 (or 305439 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 79408940 is about 8911.1693957639. The cubic root of 79408940 is about 429.8231470313.

The spelling of 79408940 in words is "seventy-nine million, four hundred eight thousand, nine hundred forty".