12912589 has 2 divisors, whose sum is σ = 12912590. Its totient is φ = 12912588.

The previous prime is 12912577. The next prime is 12912619. The reversal of 12912589 is 98521921.

12912589 is digitally balanced in base 2, 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., 10562500 + 2350089 = 3250^2 + 1533^2 .

It is a cyclic number.

It is not a de Polignac number, because 12912589 - 2²¹ = 10815437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12912509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6456294 + 6456295.

It is an arithmetic number, because the mean of its divisors is an integer number (6456295).

Almost surely, 2^12912589 is an apocalyptic number.

It is an amenable number.

12912589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12912589 is an equidigital number, since it uses as much as digits as its factorization.

12912589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 37.

The square root of 12912589 is about 3593.4091055709. The cubic root of 12912589 is about 234.6052767040.

The spelling of 12912589 in words is "twelve million, nine hundred twelve thousand, five hundred eighty-nine".