12444445 has 8 divisors (see below), whose sum is σ = 16082136. Its totient is φ = 9189696.

The previous prime is 12444437. The next prime is 12444473. The reversal of 12444445 is 54444421.

12444445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2540836 + 9903609 = 1594^2 + 3147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12444445 - 2³ = 12444437 is a prime.

It is a super-2 number, since 2×12444445² = 309728422716050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95662 + ... + 95791.

It is an arithmetic number, because the mean of its divisors is an integer number (2010267).

Almost surely, 2^12444445 is an apocalyptic number.

It is an amenable number.

12444445 is a deficient number, since it is larger than the sum of its proper divisors (3637691).

12444445 is a wasteful number, since it uses less digits than its factorization.

12444445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191471.

The product of its digits is 10240, while the sum is 28.

The square root of 12444445 is about 3527.6684934954. The cubic root of 12444445 is about 231.7351131075.

Adding to 12444445 its reverse (54444421), we get a palindrome (66888866).

The spelling of 12444445 in words is "twelve million, four hundred forty-four thousand, four hundred forty-five".