12877979 has 2 divisors, whose sum is σ = 12877980. Its totient is φ = 12877978.

The previous prime is 12877973. The next prime is 12877981. The reversal of 12877979 is 97977821.

It is a strong prime.

It is an emirp because it is prime and its reverse (97977821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12877979 - 2²⁰ = 11829403 is a prime.

Together with 12877981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12877973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6438989 + 6438990.

It is an arithmetic number, because the mean of its divisors is an integer number (6438990).

Almost surely, 2^12877979 is an apocalyptic number.

12877979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12877979 is an equidigital number, since it uses as much as digits as its factorization.

12877979 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12877979 is about 3588.5901131224. The cubic root of 12877979 is about 234.3954826307.

The spelling of 12877979 in words is "twelve million, eight hundred seventy-seven thousand, nine hundred seventy-nine".