12590209 has 4 divisors (see below), whose sum is σ = 12606804. Its totient is φ = 12573616.

The previous prime is 12590189. The next prime is 12590231. The reversal of 12590209 is 90209521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90209521 = 223 ⋅404527.

It can be written as a sum of positive squares in 2 ways, for example, as 7683984 + 4906225 = 2772^2 + 2215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12590209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12590009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7102 + ... + 8695.

It is an arithmetic number, because the mean of its divisors is an integer number (3151701).

Almost surely, 2^12590209 is an apocalyptic number.

It is an amenable number.

12590209 is a deficient number, since it is larger than the sum of its proper divisors (16595).

12590209 is an equidigital number, since it uses as much as digits as its factorization.

12590209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16594.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 12590209 is about 3548.2684509490. The cubic root of 12590209 is about 232.6363881621.

It can be divided in two parts, 1259020 and 9, that multiplied together give a triangular number (11331180 = T₄₇₆₀).

The spelling of 12590209 in words is "twelve million, five hundred ninety thousand, two hundred nine".