13399544 has 16 divisors (see below), whose sum is σ = 25193400. Its totient is φ = 6681312.

The previous prime is 13399543. The next prime is 13399571. The reversal of 13399544 is 44599331.

It is a junction number, because it is equal to n+sod(n) for n = 13399498 and 13399507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13399543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067 + ... + 5285.

Almost surely, 2^13399544 is an apocalyptic number.

It is an amenable number.

13399544 is a deficient number, since it is larger than the sum of its proper divisors (11793856).

13399544 is a wasteful number, since it uses less digits than its factorization.

13399544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4622 (or 4618 counting only the distinct ones).

The product of its digits is 58320, while the sum is 38.

The square root of 13399544 is about 3660.5387581612. The cubic root of 13399544 is about 237.5180795101.

The spelling of 13399544 in words is "thirteen million, three hundred ninety-nine thousand, five hundred forty-four".