12756479 has 2 divisors, whose sum is σ = 12756480. Its totient is φ = 12756478.

The previous prime is 12756473. The next prime is 12756487. The reversal of 12756479 is 97465721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12756479 - 2⁴ = 12756463 is a prime.

It is a Sophie Germain 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 (12756473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378239 + 6378240.

It is an arithmetic number, because the mean of its divisors is an integer number (6378240).

Almost surely, 2^12756479 is an apocalyptic number.

12756479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12756479 is an equidigital number, since it uses as much as digits as its factorization.

12756479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 12756479 is about 3571.6213405119. The cubic root of 12756479 is about 233.6560009820.

The spelling of 12756479 in words is "twelve million, seven hundred fifty-six thousand, four hundred seventy-nine".