13239129 has 4 divisors (see below), whose sum is σ = 17652176. Its totient is φ = 8826084.

The previous prime is 13239119. The next prime is 13239137. The reversal of 13239129 is 92193231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13239129 - 2⁴ = 13239113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13239096 and 13239105.

It is not an unprimeable number, because it can be changed into a prime (13239119) 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, 2206519 + ... + 2206524.

It is an arithmetic number, because the mean of its divisors is an integer number (4413044).

Almost surely, 2^13239129 is an apocalyptic number.

It is an amenable number.

13239129 is a deficient number, since it is larger than the sum of its proper divisors (4413047).

13239129 is an equidigital number, since it uses as much as digits as its factorization.

13239129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413046.

The product of its digits is 2916, while the sum is 30.

The square root of 13239129 is about 3638.5613915392. The cubic root of 13239129 is about 236.5664419460.

The spelling of 13239129 in words is "thirteen million, two hundred thirty-nine thousand, one hundred twenty-nine".