13112839 has 4 divisors (see below), whose sum is σ = 13121856. Its totient is φ = 13103824.

The previous prime is 13112821. The next prime is 13112849. The reversal of 13112839 is 93821131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 93821131 = 107 ⋅876833.

It is a cyclic number.

It is not a de Polignac number, because 13112839 - 2⁷ = 13112711 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 (13112819) 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, 1774 + ... + 5419.

It is an arithmetic number, because the mean of its divisors is an integer number (3280464).

Almost surely, 2^13112839 is an apocalyptic number.

13112839 is a deficient number, since it is larger than the sum of its proper divisors (9017).

13112839 is an equidigital number, since it uses as much as digits as its factorization.

13112839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9016.

The product of its digits is 1296, while the sum is 28.

The square root of 13112839 is about 3621.1654201376. The cubic root of 13112839 is about 235.8118233270.

The spelling of 13112839 in words is "thirteen million, one hundred twelve thousand, eight hundred thirty-nine".