12668039 has 2 divisors, whose sum is σ = 12668040. Its totient is φ = 12668038.

The previous prime is 12668021. The next prime is 12668059. The reversal of 12668039 is 93086621.

It is a weak prime.

It is an emirp because it is prime and its reverse (93086621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12668039 - 2⁸ = 12667783 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12668059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6334019 + 6334020.

It is an arithmetic number, because the mean of its divisors is an integer number (6334020).

Almost surely, 2^12668039 is an apocalyptic number.

12668039 is a deficient number, since it is larger than the sum of its proper divisors (1).

12668039 is an equidigital number, since it uses as much as digits as its factorization.

12668039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12668039 is about 3559.2188749780. The cubic root of 12668039 is about 233.1147733465.

The spelling of 12668039 in words is "twelve million, six hundred sixty-eight thousand, thirty-nine".