13189944 has 32 divisors (see below), whose sum is σ = 33073920. Its totient is φ = 4383456.

The previous prime is 13189937. The next prime is 13189999. The reversal of 13189944 is 44998131.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 10519 + ... + 11705.

It is an arithmetic number, because the mean of its divisors is an integer number (1033560).

Almost surely, 2^13189944 is an apocalyptic number.

It is an amenable number.

13189944 is an abundant number, since it is smaller than the sum of its proper divisors (19883976).

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

13189944 is a wasteful number, since it uses less digits than its factorization.

13189944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659 (or 1655 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 13189944 is about 3631.7962497916. The cubic root of 13189944 is about 236.2731205502.

The spelling of 13189944 in words is "thirteen million, one hundred eighty-nine thousand, nine hundred forty-four".