13979972 has 24 divisors (see below), whose sum is σ = 26644800. Its totient is φ = 6392736.

The previous prime is 13979963. The next prime is 13979983. The reversal of 13979972 is 27997931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 968 + ... + 5375.

It is an arithmetic number, because the mean of its divisors is an integer number (1110200).

Almost surely, 2^13979972 is an apocalyptic number.

It is an amenable number.

13979972 is a deficient number, since it is larger than the sum of its proper divisors (12664828).

13979972 is a wasteful number, since it uses less digits than its factorization.

13979972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395 (or 6393 counting only the distinct ones).

The product of its digits is 214326, while the sum is 47.

The square root of 13979972 is about 3738.9800748332. The cubic root of 13979972 is about 240.8992422136.

The spelling of 13979972 in words is "thirteen million, nine hundred seventy-nine thousand, nine hundred seventy-two".