13989264 has 20 divisors (see below), whose sum is σ = 36139056. Its totient is φ = 4663072.

The previous prime is 13989257. The next prime is 13989271. The reversal of 13989264 is 46298931.

13989264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13989257) and next prime (13989271).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145674 + ... + 145769.

Almost surely, 2^13989264 is an apocalyptic number.

It is an amenable number.

13989264 is an abundant number, since it is smaller than the sum of its proper divisors (22149792).

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

13989264 is a wasteful number, since it uses less digits than its factorization.

13989264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291454 (or 291448 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 13989264 is about 3740.2224532773. Note that the first 3 decimals coincide. The cubic root of 13989264 is about 240.9526028357.

The spelling of 13989264 in words is "thirteen million, nine hundred eighty-nine thousand, two hundred sixty-four".