13968239 has 2 divisors, whose sum is σ = 13968240. Its totient is φ = 13968238.

The previous prime is 13968223. The next prime is 13968281. The reversal of 13968239 is 93286931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13968239 - 2⁴ = 13968223 is a prime.

It is a super-2 number, since 2×13968239² = 390223401522242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13968196 and 13968205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13968209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6984119 + 6984120.

It is an arithmetic number, because the mean of its divisors is an integer number (6984120).

Almost surely, 2^13968239 is an apocalyptic number.

13968239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13968239 is an equidigital number, since it uses as much as digits as its factorization.

13968239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 13968239 is about 3737.4107347200. The cubic root of 13968239 is about 240.8318300161.

The spelling of 13968239 in words is "thirteen million, nine hundred sixty-eight thousand, two hundred thirty-nine".