13837994 has 4 divisors (see below), whose sum is σ = 20756994. Its totient is φ = 6918996.

The previous prime is 13837981. The next prime is 13838021. The reversal of 13837994 is 49973831.

It is a happy number.

13837994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49973831 = 47 ⋅1063273.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 405769 = 3665^2 + 637^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3459497 + ... + 3459500.

Almost surely, 2^13837994 is an apocalyptic number.

13837994 is a deficient number, since it is larger than the sum of its proper divisors (6919000).

13837994 is an equidigital number, since it uses as much as digits as its factorization.

13837994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6918999.

The product of its digits is 163296, while the sum is 44.

The square root of 13837994 is about 3719.9454297073. The cubic root of 13837994 is about 240.0809564851.

The spelling of 13837994 in words is "thirteen million, eight hundred thirty-seven thousand, nine hundred ninety-four".