13712239 has 2 divisors, whose sum is σ = 13712240. Its totient is φ = 13712238.

The previous prime is 13712219. The next prime is 13712269. The reversal of 13712239 is 93221731.

It is a weak prime.

It is an emirp because it is prime and its reverse (93221731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13712239 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 (13712219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6856119 + 6856120.

It is an arithmetic number, because the mean of its divisors is an integer number (6856120).

Almost surely, 2^13712239 is an apocalyptic number.

13712239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13712239 is an equidigital number, since it uses as much as digits as its factorization.

13712239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 13712239 is about 3703.0040507674. The cubic root of 13712239 is about 239.3514841454.

The spelling of 13712239 in words is "thirteen million, seven hundred twelve thousand, two hundred thirty-nine".