13237139 has 4 divisors (see below), whose sum is σ = 13244880. Its totient is φ = 13229400.

The previous prime is 13237117. The next prime is 13237151. The reversal of 13237139 is 93173231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13237139 - 2¹⁶ = 13171603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13237199) 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, 44 + ... + 5145.

It is an arithmetic number, because the mean of its divisors is an integer number (3311220).

Almost surely, 2^13237139 is an apocalyptic number.

13237139 is a deficient number, since it is larger than the sum of its proper divisors (7741).

13237139 is an equidigital number, since it uses as much as digits as its factorization.

13237139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7740.

The product of its digits is 3402, while the sum is 29.

The square root of 13237139 is about 3638.2879215367. The cubic root of 13237139 is about 236.5545884268.

The spelling of 13237139 in words is "thirteen million, two hundred thirty-seven thousand, one hundred thirty-nine".