12944893979 has 4 divisors (see below), whose sum is σ = 12945308376. Its totient is φ = 12944479584.

The previous prime is 12944893921. The next prime is 12944893981. The reversal of 12944893979 is 97939844921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12944893979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12944893679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156149 + ... + 224214.

It is an arithmetic number, because the mean of its divisors is an integer number (3236327094).

Almost surely, 2^12944893979 is an apocalyptic number.

12944893979 is a deficient number, since it is larger than the sum of its proper divisors (414397).

12944893979 is an equidigital number, since it uses as much as digits as its factorization.

12944893979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414396.

The product of its digits is 35271936, while the sum is 65.

The spelling of 12944893979 in words is "twelve billion, nine hundred forty-four million, eight hundred ninety-three thousand, nine hundred seventy-nine".