13971992 has 16 divisors (see below), whose sum is σ = 27576600. Its totient is φ = 6618240.

The previous prime is 13971959. The next prime is 13972003. The reversal of 13971992 is 29917931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45809 + ... + 46112.

Almost surely, 2^13971992 is an apocalyptic number.

It is an amenable number.

13971992 is a deficient number, since it is larger than the sum of its proper divisors (13604608).

13971992 is a wasteful number, since it uses less digits than its factorization.

13971992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91946 (or 91942 counting only the distinct ones).

The product of its digits is 30618, while the sum is 41.

The square root of 13971992 is about 3737.9127865695. The cubic root of 13971992 is about 240.8533970612.

The spelling of 13971992 in words is "thirteen million, nine hundred seventy-one thousand, nine hundred ninety-two".