12982289 has 4 divisors (see below), whose sum is σ = 12990900. Its totient is φ = 12973680.

The previous prime is 12982283. The next prime is 12982303. The reversal of 12982289 is 98228921.

12982289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11444689 + 1537600 = 3383^2 + 1240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12982289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12982283) 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, 1382 + ... + 5279.

It is an arithmetic number, because the mean of its divisors is an integer number (3247725).

Almost surely, 2^12982289 is an apocalyptic number.

It is an amenable number.

12982289 is a deficient number, since it is larger than the sum of its proper divisors (8611).

12982289 is an equidigital number, since it uses as much as digits as its factorization.

12982289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8610.

The product of its digits is 41472, while the sum is 41.

The square root of 12982289 is about 3603.0943645705. The cubic root of 12982289 is about 235.0266395031.

The spelling of 12982289 in words is "twelve million, nine hundred eighty-two thousand, two hundred eighty-nine".