12916439 has 2 divisors, whose sum is σ = 12916440. Its totient is φ = 12916438.

The previous prime is 12916433. The next prime is 12916451. The reversal of 12916439 is 93461921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12916439 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12916399 and 12916408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12916433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458219 + 6458220.

It is an arithmetic number, because the mean of its divisors is an integer number (6458220).

Almost surely, 2^12916439 is an apocalyptic number.

12916439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12916439 is an equidigital number, since it uses as much as digits as its factorization.

12916439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 12916439 is about 3593.9447686352. The cubic root of 12916439 is about 234.6285909173.

The spelling of 12916439 in words is "twelve million, nine hundred sixteen thousand, four hundred thirty-nine".