12786479 has 2 divisors, whose sum is σ = 12786480. Its totient is φ = 12786478.

The previous prime is 12786469. The next prime is 12786493. The reversal of 12786479 is 97468721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12786479 - 2²⁰ = 11737903 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 (12786439) 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, 6393239 + 6393240.

It is an arithmetic number, because the mean of its divisors is an integer number (6393240).

Almost surely, 2^12786479 is an apocalyptic number.

12786479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12786479 is an equidigital number, since it uses as much as digits as its factorization.

12786479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 12786479 is about 3575.8186475267. The cubic root of 12786479 is about 233.8390241135.

The spelling of 12786479 in words is "twelve million, seven hundred eighty-six thousand, four hundred seventy-nine".