12487589 has 2 divisors, whose sum is σ = 12487590. Its totient is φ = 12487588.

The previous prime is 12487561. The next prime is 12487619. The reversal of 12487589 is 98578421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11937025 + 550564 = 3455^2 + 742^2 .

It is an emirp because it is prime and its reverse (98578421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12487589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12487789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6243794 + 6243795.

It is an arithmetic number, because the mean of its divisors is an integer number (6243795).

Almost surely, 2^12487589 is an apocalyptic number.

It is an amenable number.

12487589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12487589 is an equidigital number, since it uses as much as digits as its factorization.

12487589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 44.

The square root of 12487589 is about 3533.7782895932. The cubic root of 12487589 is about 232.0026072339.

The spelling of 12487589 in words is "twelve million, four hundred eighty-seven thousand, five hundred eighty-nine".