12307639 has 2 divisors, whose sum is σ = 12307640. Its totient is φ = 12307638.

The previous prime is 12307627. The next prime is 12307657. The reversal of 12307639 is 93670321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12307639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12307639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12307619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6153819 + 6153820.

It is an arithmetic number, because the mean of its divisors is an integer number (6153820).

Almost surely, 2^12307639 is an apocalyptic number.

12307639 is a deficient number, since it is larger than the sum of its proper divisors (1).

12307639 is an equidigital number, since it uses as much as digits as its factorization.

12307639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 12307639 is about 3508.2244797048. The cubic root of 12307639 is about 230.8828013149.

The spelling of 12307639 in words is "twelve million, three hundred seven thousand, six hundred thirty-nine".