12982609 has 4 divisors (see below), whose sum is σ = 13299300. Its totient is φ = 12665920.

The previous prime is 12982601. The next prime is 12982621. The reversal of 12982609 is 90628921.

12982609 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.

It can be written as a sum of positive squares in 2 ways, for example, as 6076225 + 6906384 = 2465^2 + 2628^2 .

It is a cyclic number.

It is not a de Polignac number, because 12982609 - 2³ = 12982601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12982601) 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, 158284 + ... + 158365.

It is an arithmetic number, because the mean of its divisors is an integer number (3324825).

Almost surely, 2^12982609 is an apocalyptic number.

It is an amenable number.

12982609 is a deficient number, since it is larger than the sum of its proper divisors (316691).

12982609 is an equidigital number, since it uses as much as digits as its factorization.

12982609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316690.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 12982609 is about 3603.1387705721. The cubic root of 12982609 is about 235.0285705417.

The spelling of 12982609 in words is "twelve million, nine hundred eighty-two thousand, six hundred nine".