13137999 has 16 divisors (see below), whose sum is σ = 20509440. Its totient is φ = 7323840.

The previous prime is 13137989. The next prime is 13138001. The reversal of 13137999 is 99973131.

13137999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13137999 - 2⁷ = 13137871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13137999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13137989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6769 + ... + 8490.

It is an arithmetic number, because the mean of its divisors is an integer number (1281840).

Almost surely, 2^13137999 is an apocalyptic number.

13137999 is a deficient number, since it is larger than the sum of its proper divisors (7371441).

13137999 is a wasteful number, since it uses less digits than its factorization.

13137999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15310.

The product of its digits is 45927, while the sum is 42.

The square root of 13137999 is about 3624.6377750059. The cubic root of 13137999 is about 235.9625467233.

The spelling of 13137999 in words is "thirteen million, one hundred thirty-seven thousand, nine hundred ninety-nine".