13979812 has 24 divisors (see below), whose sum is σ = 30502080. Its totient is φ = 5446560.

The previous prime is 13979809. The next prime is 13979813. The reversal of 13979812 is 21897931.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13979813) 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, 22387 + ... + 23002.

It is an arithmetic number, because the mean of its divisors is an integer number (1270920).

Almost surely, 2^13979812 is an apocalyptic number.

It is an amenable number.

13979812 is an abundant number, since it is smaller than the sum of its proper divisors (16522268).

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

13979812 is a wasteful number, since it uses less digits than its factorization.

13979812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45411 (or 45409 counting only the distinct ones).

The product of its digits is 27216, while the sum is 40.

The square root of 13979812 is about 3738.9586785628. The cubic root of 13979812 is about 240.8983231840.

The spelling of 13979812 in words is "thirteen million, nine hundred seventy-nine thousand, eight hundred twelve".