13958839 has 2 divisors, whose sum is σ = 13958840. Its totient is φ = 13958838.

The previous prime is 13958827. The next prime is 13958843. The reversal of 13958839 is 93885931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13958839 - 2⁵ = 13958807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13958809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6979419 + 6979420.

It is an arithmetic number, because the mean of its divisors is an integer number (6979420).

Almost surely, 2^13958839 is an apocalyptic number.

13958839 is a deficient number, since it is larger than the sum of its proper divisors (1).

13958839 is an equidigital number, since it uses as much as digits as its factorization.

13958839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 46.

The square root of 13958839 is about 3736.1529679605. The cubic root of 13958839 is about 240.7777948771. Note that the first 4 decimals are identical.

The spelling of 13958839 in words is "thirteen million, nine hundred fifty-eight thousand, eight hundred thirty-nine".