12944447 has 4 divisors (see below), whose sum is σ = 12988920. Its totient is φ = 12899976.

The previous prime is 12944443. The next prime is 12944473. The reversal of 12944447 is 74444921.

12944447 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 is a cyclic number.

It is not a de Polignac number, because 12944447 - 2² = 12944443 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 (12944443) 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, 21797 + ... + 22382.

It is an arithmetic number, because the mean of its divisors is an integer number (3247230).

Almost surely, 2^12944447 is an apocalyptic number.

12944447 is a deficient number, since it is larger than the sum of its proper divisors (44473).

12944447 is an equidigital number, since it uses as much as digits as its factorization.

12944447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44472.

The product of its digits is 32256, while the sum is 35.

The square root of 12944447 is about 3597.8392126386. The cubic root of 12944447 is about 234.7980579926.

The spelling of 12944447 in words is "twelve million, nine hundred forty-four thousand, four hundred forty-seven".