12879679 has 2 divisors, whose sum is σ = 12879680. Its totient is φ = 12879678.

The previous prime is 12879667. The next prime is 12879707. The reversal of 12879679 is 97697821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12879679 - 2¹³ = 12871487 is a prime.

It is a super-2 number, since 2×12879679² = 331772262286082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12879619) 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, 6439839 + 6439840.

It is an arithmetic number, because the mean of its divisors is an integer number (6439840).

Almost surely, 2^12879679 is an apocalyptic number.

12879679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12879679 is an equidigital number, since it uses as much as digits as its factorization.

12879679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 49.

The square root of 12879679 is about 3588.8269671301. The cubic root of 12879679 is about 234.4057962259.

The spelling of 12879679 in words is "twelve million, eight hundred seventy-nine thousand, six hundred seventy-nine".