13977904 has 10 divisors (see below), whose sum is σ = 27082220. Its totient is φ = 6988944.

The previous prime is 13977889. The next prime is 13977917. The reversal of 13977904 is 40977931.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436794 + ... + 436825.

It is an arithmetic number, because the mean of its divisors is an integer number (2708222).

Almost surely, 2^13977904 is an apocalyptic number.

It is an amenable number.

13977904 is a deficient number, since it is larger than the sum of its proper divisors (13104316).

13977904 is an equidigital number, since it uses as much as digits as its factorization.

13977904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873627 (or 873621 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 13977904 is about 3738.7035186011. The cubic root of 13977904 is about 240.8873632151.

The spelling of 13977904 in words is "thirteen million, nine hundred seventy-seven thousand, nine hundred four".