12390609 has 16 divisors (see below), whose sum is σ = 20597760. Its totient is φ = 6436560.

The previous prime is 12390601. The next prime is 12390611. The reversal of 12390609 is 90609321.

It is not a de Polignac number, because 12390609 - 2³ = 12390601 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12390601) 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 in 15 ways as a sum of consecutive naturals, for example, 26589 + ... + 27050.

It is an arithmetic number, because the mean of its divisors is an integer number (1287360).

Almost surely, 2^12390609 is an apocalyptic number.

It is an amenable number.

12390609 is a deficient number, since it is larger than the sum of its proper divisors (8207151).

12390609 is a wasteful number, since it uses less digits than its factorization.

12390609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53660.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 12390609 is about 3520.0296873748. The cubic root of 12390609 is about 231.4004597661.

The spelling of 12390609 in words is "twelve million, three hundred ninety thousand, six hundred nine".