13874239 has 2 divisors, whose sum is σ = 13874240. Its totient is φ = 13874238.

The previous prime is 13874233. The next prime is 13874243. The reversal of 13874239 is 93247831.

It is a strong prime.

It is an emirp because it is prime and its reverse (93247831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13874239 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13874198 and 13874207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13874233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6937119 + 6937120.

It is an arithmetic number, because the mean of its divisors is an integer number (6937120).

Almost surely, 2^13874239 is an apocalyptic number.

13874239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13874239 is an equidigital number, since it uses as much as digits as its factorization.

13874239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 13874239 is about 3724.8139550855. The cubic root of 13874239 is about 240.2903834680.

The spelling of 13874239 in words is "thirteen million, eight hundred seventy-four thousand, two hundred thirty-nine".