12259609 has 2 divisors, whose sum is σ = 12259610. Its totient is φ = 12259608.

The previous prime is 12259607. The next prime is 12259613. The reversal of 12259609 is 90695221.

12259609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11923209 + 336400 = 3453^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 12259609 - 2¹ = 12259607 is a prime.

Together with 12259607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12259603) 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, 6129804 + 6129805.

It is an arithmetic number, because the mean of its divisors is an integer number (6129805).

Almost surely, 2^12259609 is an apocalyptic number.

It is an amenable number.

12259609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12259609 is an equidigital number, since it uses as much as digits as its factorization.

12259609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 12259609 is about 3501.3724451992. The cubic root of 12259609 is about 230.5820732476.

The spelling of 12259609 in words is "twelve million, two hundred fifty-nine thousand, six hundred nine".