12989573 has 4 divisors (see below), whose sum is σ = 13009548. Its totient is φ = 12969600.

The previous prime is 12989563. The next prime is 12989591. The reversal of 12989573 is 37598921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37598921 = 4483 ⋅8387.

It can be written as a sum of positive squares in 2 ways, for example, as 5769604 + 7219969 = 2402^2 + 2687^2 .

It is a cyclic number.

It is not a de Polignac number, because 12989573 - 2²⁰ = 11940997 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 (12989563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8978 + ... + 10323.

It is an arithmetic number, because the mean of its divisors is an integer number (3252387).

Almost surely, 2^12989573 is an apocalyptic number.

It is an amenable number.

12989573 is a deficient number, since it is larger than the sum of its proper divisors (19975).

12989573 is an equidigital number, since it uses as much as digits as its factorization.

12989573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19974.

The product of its digits is 136080, while the sum is 44.

The square root of 12989573 is about 3604.1050206674. The cubic root of 12989573 is about 235.0705869140.

The spelling of 12989573 in words is "twelve million, nine hundred eighty-nine thousand, five hundred seventy-three".