13889629 has 12 divisors (see below), whose sum is σ = 15894004. Its totient is φ = 12063744.

The previous prime is 13889599. The next prime is 13889641. The reversal of 13889629 is 92698831.

It can be written as a sum of positive squares in 6 ways, for example, as 273529 + 13616100 = 523^2 + 3690^2 .

It is not a de Polignac number, because 13889629 - 2⁵ = 13889597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13889669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1909 + ... + 5605.

Almost surely, 2^13889629 is an apocalyptic number.

It is an amenable number.

13889629 is a deficient number, since it is larger than the sum of its proper divisors (2004375).

13889629 is a wasteful number, since it uses less digits than its factorization.

13889629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744 (or 3727 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 13889629 is about 3726.8792575022. The cubic root of 13889629 is about 240.3791980085.

The spelling of 13889629 in words is "thirteen million, eight hundred eighty-nine thousand, six hundred twenty-nine".