12999589 has 4 divisors (see below), whose sum is σ = 13276224. Its totient is φ = 12722956.

The previous prime is 12999587. The next prime is 12999641. The reversal of 12999589 is 98599921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12999589 - 2¹ = 12999587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12999587) 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 in 3 ways as a sum of consecutive naturals, for example, 138247 + ... + 138340.

It is an arithmetic number, because the mean of its divisors is an integer number (3319056).

Almost surely, 2^12999589 is an apocalyptic number.

It is an amenable number.

12999589 is a deficient number, since it is larger than the sum of its proper divisors (276635).

12999589 is an equidigital number, since it uses as much as digits as its factorization.

12999589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276634.

The product of its digits is 524880, while the sum is 52.

The square root of 12999589 is about 3605.4942795683. The cubic root of 12999589 is about 235.1309908009.

The spelling of 12999589 in words is "twelve million, nine hundred ninety-nine thousand, five hundred eighty-nine".