12489523 has 2 divisors, whose sum is σ = 12489524. Its totient is φ = 12489522.

The previous prime is 12489511. The next prime is 12489527. The reversal of 12489523 is 32598421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12489523 is a prime.

It is not a weakly prime, because it can be changed into another prime (12489527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6244761 + 6244762.

It is an arithmetic number, because the mean of its divisors is an integer number (6244762).

Almost surely, 2^12489523 is an apocalyptic number.

12489523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12489523 is an equidigital number, since it uses as much as digits as its factorization.

12489523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 12489523 is about 3534.0519237838. The cubic root of 12489523 is about 232.0145836552.

The spelling of 12489523 in words is "twelve million, four hundred eighty-nine thousand, five hundred twenty-three".