13957990 has 16 divisors (see below), whose sum is σ = 25991280. Its totient is φ = 5390560.

The previous prime is 13957981. The next prime is 13958011. The reversal of 13957990 is 9975931.

It is a congruent number.

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, 23776 + ... + 24355.

It is an arithmetic number, because the mean of its divisors is an integer number (1624455).

Almost surely, 2^13957990 is an apocalyptic number.

13957990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13957990 is a deficient number, since it is larger than the sum of its proper divisors (12033290).

13957990 is a wasteful number, since it uses less digits than its factorization.

13957990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48167.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 13957990 is about 3736.0393466879. The cubic root of 13957990 is about 240.7729132750.

The spelling of 13957990 in words is "thirteen million, nine hundred fifty-seven thousand, nine hundred ninety".