12879779 has 8 divisors (see below), whose sum is σ = 14130480. Its totient is φ = 11642400.

The previous prime is 12879773. The next prime is 12879827. The reversal of 12879779 is 97797821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12879779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12879773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244 + ... + 5225.

It is an arithmetic number, because the mean of its divisors is an integer number (1766310).

Almost surely, 2^12879779 is an apocalyptic number.

12879779 is a deficient number, since it is larger than the sum of its proper divisors (1250701).

12879779 is a wasteful number, since it uses less digits than its factorization.

12879779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661.

The product of its digits is 444528, while the sum is 50.

The square root of 12879779 is about 3588.8408992320. The cubic root of 12879779 is about 234.4064028797.

The spelling of 12879779 in words is "twelve million, eight hundred seventy-nine thousand, seven hundred seventy-nine".