13993432 has 8 divisors (see below), whose sum is σ = 26237700. Its totient is φ = 6996712.

The previous prime is 13993429. The next prime is 13993433. The reversal of 13993432 is 23439931.

13993432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13993432² = 391632278277248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13993433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 874582 + ... + 874597.

Almost surely, 2^13993432 is an apocalyptic number.

It is an amenable number.

13993432 is a deficient number, since it is larger than the sum of its proper divisors (12244268).

13993432 is a wasteful number, since it uses less digits than its factorization.

13993432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749185 (or 1749181 counting only the distinct ones).

The product of its digits is 17496, while the sum is 34.

The square root of 13993432 is about 3740.7795978913. The cubic root of 13993432 is about 240.9765304877.

The spelling of 13993432 in words is "thirteen million, nine hundred ninety-three thousand, four hundred thirty-two".