12989539 has 2 divisors, whose sum is σ = 12989540. Its totient is φ = 12989538.

The previous prime is 12989519. The next prime is 12989563. The reversal of 12989539 is 93598921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12989539 - 2⁵ = 12989507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12989519) 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, 6494769 + 6494770.

It is an arithmetic number, because the mean of its divisors is an integer number (6494770).

Almost surely, 2^12989539 is an apocalyptic number.

12989539 is a deficient number, since it is larger than the sum of its proper divisors (1).

12989539 is an equidigital number, since it uses as much as digits as its factorization.

12989539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 46.

The square root of 12989539 is about 3604.1003038206. The cubic root of 12989539 is about 235.0703818160.

The spelling of 12989539 in words is "twelve million, nine hundred eighty-nine thousand, five hundred thirty-nine".