12444689 has 4 divisors (see below), whose sum is σ = 12748260. Its totient is φ = 12141120.

The previous prime is 12444661. The next prime is 12444701. The reversal of 12444689 is 98644421.

12444689 is digitally balanced in base 2, 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 1000000 + 11444689 = 1000^2 + 3383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12444689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12444659) 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, 151724 + ... + 151805.

It is an arithmetic number, because the mean of its divisors is an integer number (3187065).

Almost surely, 2^12444689 is an apocalyptic number.

It is an amenable number.

12444689 is a deficient number, since it is larger than the sum of its proper divisors (303571).

12444689 is an equidigital number, since it uses as much as digits as its factorization.

12444689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303570.

The product of its digits is 55296, while the sum is 38.

The square root of 12444689 is about 3527.7030770744. The cubic root of 12444689 is about 231.7366276521.

The spelling of 12444689 in words is "twelve million, four hundred forty-four thousand, six hundred eighty-nine".