12587009 has 2 divisors, whose sum is σ = 12587010. Its totient is φ = 12587008.

The previous prime is 12586997. The next prime is 12587027. The reversal of 12587009 is 90078521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9628609 + 2958400 = 3103^2 + 1720^2 .

It is a cyclic number.

It is not a de Polignac number, because 12587009 - 2⁸ = 12586753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12587039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6293504 + 6293505.

It is an arithmetic number, because the mean of its divisors is an integer number (6293505).

It is a Proth number, since it is equal to 3073 ⋅ 2¹² + 1 and 3073 < 2¹².

Almost surely, 2^12587009 is an apocalyptic number.

It is an amenable number.

12587009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12587009 is an equidigital number, since it uses as much as digits as its factorization.

12587009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 12587009 is about 3547.8174981247. The cubic root of 12587009 is about 232.6166770908.

The spelling of 12587009 in words is "twelve million, five hundred eighty-seven thousand, nine".