12880979 has 2 divisors, whose sum is σ = 12880980. Its totient is φ = 12880978.

The previous prime is 12880949. The next prime is 12880997. The reversal of 12880979 is 97908821.

Together with next prime (12880997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12880979 - 2⁸ = 12880723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12880919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6440489 + 6440490.

It is an arithmetic number, because the mean of its divisors is an integer number (6440490).

Almost surely, 2^12880979 is an apocalyptic number.

12880979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12880979 is an equidigital number, since it uses as much as digits as its factorization.

12880979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 12880979 is about 3589.0080802361. The cubic root of 12880979 is about 234.4136824805.

The spelling of 12880979 in words is "twelve million, eight hundred eighty thousand, nine hundred seventy-nine".