12585949 has 2 divisors, whose sum is σ = 12585950. Its totient is φ = 12585948.

The previous prime is 12585941. The next prime is 12585973. The reversal of 12585949 is 94958521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9672100 + 2913849 = 3110^2 + 1707^2 .

It is a cyclic number.

It is not a de Polignac number, because 12585949 - 2³ = 12585941 is a prime.

It is a super-2 number, since 2×12585949² = 316812224461202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12585941) 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, 6292974 + 6292975.

It is an arithmetic number, because the mean of its divisors is an integer number (6292975).

Almost surely, 2^12585949 is an apocalyptic number.

It is an amenable number.

12585949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12585949 is an equidigital number, since it uses as much as digits as its factorization.

12585949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 43.

The square root of 12585949 is about 3547.6681073629. The cubic root of 12585949 is about 232.6101470618.

The spelling of 12585949 in words is "twelve million, five hundred eighty-five thousand, nine hundred forty-nine".