13399839 has 6 divisors (see below), whose sum is σ = 19355336. Its totient is φ = 8933220.

The previous prime is 13399829. The next prime is 13399849. The reversal of 13399839 is 93899331.

It is an interprime number because it is at equal distance from previous prime (13399829) and next prime (13399849).

It is not a de Polignac number, because 13399839 - 2⁹ = 13399327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13399794 and 13399803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13399819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 744427 + ... + 744444.

Almost surely, 2^13399839 is an apocalyptic number.

13399839 is a deficient number, since it is larger than the sum of its proper divisors (5955497).

13399839 is a wasteful number, since it uses less digits than its factorization.

13399839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488877 (or 1488874 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 13399839 is about 3660.5790525544. The cubic root of 13399839 is about 237.5198225376.

The spelling of 13399839 in words is "thirteen million, three hundred ninety-nine thousand, eight hundred thirty-nine".