12507839 has 2 divisors, whose sum is σ = 12507840. Its totient is φ = 12507838.

The previous prime is 12507827. The next prime is 12507863. The reversal of 12507839 is 93870521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12507839 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12507799 and 12507808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12507889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253919 + 6253920.

It is an arithmetic number, because the mean of its divisors is an integer number (6253920).

Almost surely, 2^12507839 is an apocalyptic number.

12507839 is a deficient number, since it is larger than the sum of its proper divisors (1).

12507839 is an equidigital number, since it uses as much as digits as its factorization.

12507839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 12507839 is about 3536.6423341921. The cubic root of 12507839 is about 232.1279454293.

The spelling of 12507839 in words is "twelve million, five hundred seven thousand, eight hundred thirty-nine".