12880999 has 2 divisors, whose sum is σ = 12881000. Its totient is φ = 12880998.

The previous prime is 12880997. The next prime is 12881023. The reversal of 12880999 is 99908821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12880999 - 2¹ = 12880997 is a prime.

Together with 12880997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12880997) 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 as a sum of consecutive naturals, namely, 6440499 + 6440500.

It is an arithmetic number, because the mean of its divisors is an integer number (6440500).

Almost surely, 2^12880999 is an apocalyptic number.

12880999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12880999 is an equidigital number, since it uses as much as digits as its factorization.

12880999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 12880999 is about 3589.0108665202. The cubic root of 12880999 is about 234.4138038033.

The spelling of 12880999 in words is "twelve million, eight hundred eighty thousand, nine hundred ninety-nine".