13943644 has 48 divisors (see below), whose sum is σ = 30199680. Its totient is φ = 5538240.

The previous prime is 13943639. The next prime is 13943659. The reversal of 13943644 is 44634931.

13943644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (34) 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 15 ways as a sum of consecutive naturals, for example, 10227 + ... + 11509.

It is an arithmetic number, because the mean of its divisors is an integer number (629160).

Almost surely, 2^13943644 is an apocalyptic number.

It is an amenable number.

13943644 is an abundant number, since it is smaller than the sum of its proper divisors (16256036).

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

13943644 is a wasteful number, since it uses less digits than its factorization.

13943644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1328 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 13943644 is about 3734.1189054448. The cubic root of 13943644 is about 240.6903963254.

The spelling of 13943644 in words is "thirteen million, nine hundred forty-three thousand, six hundred forty-four".