13311439 has 4 divisors (see below), whose sum is σ = 13326120. Its totient is φ = 13296760.

The previous prime is 13311437. The next prime is 13311443. The reversal of 13311439 is 93411331.

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 13311439 - 2¹ = 13311437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311433) 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, 5884 + ... + 7825.

It is an arithmetic number, because the mean of its divisors is an integer number (3331530).

Almost surely, 2^13311439 is an apocalyptic number.

13311439 is a deficient number, since it is larger than the sum of its proper divisors (14681).

13311439 is an equidigital number, since it uses as much as digits as its factorization.

13311439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14680.

The product of its digits is 972, while the sum is 25.

The square root of 13311439 is about 3648.4844798902. The cubic root of 13311439 is about 236.9963561784.

The spelling of 13311439 in words is "thirteen million, three hundred eleven thousand, four hundred thirty-nine".