13499839 has 2 divisors, whose sum is σ = 13499840. Its totient is φ = 13499838.

The previous prime is 13499833. The next prime is 13499851. The reversal of 13499839 is 93899431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13499839 - 2³ = 13499831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13499831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6749919 + 6749920.

It is an arithmetic number, because the mean of its divisors is an integer number (6749920).

Almost surely, 2^13499839 is an apocalyptic number.

13499839 is a deficient number, since it is larger than the sum of its proper divisors (1).

13499839 is an equidigital number, since it uses as much as digits as its factorization.

13499839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 13499839 is about 3674.2127047845. The cubic root of 13499839 is about 238.1092112301.

The spelling of 13499839 in words is "thirteen million, four hundred ninety-nine thousand, eight hundred thirty-nine".