12975989 has 6 divisors (see below), whose sum is σ = 14051106. Its totient is φ = 11977680.

The previous prime is 12975983. The next prime is 12976009. The reversal of 12975989 is 98957921.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 935089 + 12040900 = 967^2 + 3470^2 .

It is not a de Polignac number, because 12975989 - 2¹⁶ = 12910453 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 (12975983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38222 + ... + 38559.

It is an arithmetic number, because the mean of its divisors is an integer number (2341851).

Almost surely, 2^12975989 is an apocalyptic number.

It is an amenable number.

12975989 is a deficient number, since it is larger than the sum of its proper divisors (1075117).

12975989 is an equidigital number, since it uses as much as digits as its factorization.

12975989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76807 (or 76794 counting only the distinct ones).

The product of its digits is 408240, while the sum is 50.

The square root of 12975989 is about 3602.2200099383. The cubic root of 12975989 is about 234.9886157153.

The spelling of 12975989 in words is "twelve million, nine hundred seventy-five thousand, nine hundred eighty-nine".