13957992 has 24 divisors (see below), whose sum is σ = 37803090. Its totient is φ = 4652640.

The previous prime is 13957981. The next prime is 13958011. The reversal of 13957992 is 29975931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9771876 + 4186116 = 3126^2 + 2046^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96859 + ... + 97002.

Almost surely, 2^13957992 is an apocalyptic number.

13957992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13957992 is an abundant number, since it is smaller than the sum of its proper divisors (23845098).

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

13957992 is a wasteful number, since it uses less digits than its factorization.

13957992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193873 (or 193866 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 13957992 is about 3736.0396143510. The cubic root of 13957992 is about 240.7729247749.

The spelling of 13957992 in words is "thirteen million, nine hundred fifty-seven thousand, nine hundred ninety-two".