12165589 has 2 divisors, whose sum is σ = 12165590. Its totient is φ = 12165588.

The previous prime is 12165583. The next prime is 12165607. The reversal of 12165589 is 98556121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11764900 + 400689 = 3430^2 + 633^2 .

It is an emirp because it is prime and its reverse (98556121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12165589 - 2³ = 12165581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12165581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6082794 + 6082795.

It is an arithmetic number, because the mean of its divisors is an integer number (6082795).

Almost surely, 2^12165589 is an apocalyptic number.

It is an amenable number.

12165589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12165589 is an equidigital number, since it uses as much as digits as its factorization.

12165589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 37.

The square root of 12165589 is about 3487.9204406064. The cubic root of 12165589 is about 229.9911086670.

The spelling of 12165589 in words is "twelve million, one hundred sixty-five thousand, five hundred eighty-nine".