13456239 has 4 divisors (see below), whose sum is σ = 17941656. Its totient is φ = 8970824.

The previous prime is 13456211. The next prime is 13456249. The reversal of 13456239 is 93265431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13456239 - 2⁹ = 13455727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13456249) 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, 2242704 + ... + 2242709.

It is an arithmetic number, because the mean of its divisors is an integer number (4485414).

Almost surely, 2^13456239 is an apocalyptic number.

13456239 is a deficient number, since it is larger than the sum of its proper divisors (4485417).

13456239 is an equidigital number, since it uses as much as digits as its factorization.

13456239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4485416.

The product of its digits is 19440, while the sum is 33.

The square root of 13456239 is about 3668.2746625628. The cubic root of 13456239 is about 237.8525968601.

It can be divided in two parts, 13456 and 239, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 13456239 in words is "thirteen million, four hundred fifty-six thousand, two hundred thirty-nine".