12280979 has 2 divisors, whose sum is σ = 12280980. Its totient is φ = 12280978.

The previous prime is 12280969. The next prime is 12280993. The reversal of 12280979 is 97908221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12280979 - 2¹² = 12276883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12280969) 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, 6140489 + 6140490.

It is an arithmetic number, because the mean of its divisors is an integer number (6140490).

Almost surely, 2^12280979 is an apocalyptic number.

12280979 is a deficient number, since it is larger than the sum of its proper divisors (1).

12280979 is an equidigital number, since it uses as much as digits as its factorization.

12280979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 12280979 is about 3504.4227770062. The cubic root of 12280979 is about 230.7159730746.

The spelling of 12280979 in words is "twelve million, two hundred eighty thousand, nine hundred seventy-nine".