12998287 has 2 divisors, whose sum is σ = 12998288. Its totient is φ = 12998286.

The previous prime is 12998281. The next prime is 12998309. The reversal of 12998287 is 78289921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12998287 - 2¹¹ = 12996239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12998281) 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, 6499143 + 6499144.

It is an arithmetic number, because the mean of its divisors is an integer number (6499144).

Almost surely, 2^12998287 is an apocalyptic number.

12998287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12998287 is an equidigital number, since it uses as much as digits as its factorization.

12998287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 46.

The square root of 12998287 is about 3605.3137172790. The cubic root of 12998287 is about 235.1231405330.

The spelling of 12998287 in words is "twelve million, nine hundred ninety-eight thousand, two hundred eighty-seven".