12444613 has 4 divisors (see below), whose sum is σ = 12709440. Its totient is φ = 12179788.

The previous prime is 12444611. The next prime is 12444631. The reversal of 12444613 is 31644421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31644421 = 61 ⋅518761.

It is a cyclic number.

It is not a de Polignac number, because 12444613 - 2¹ = 12444611 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 (12444611) 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, 132343 + ... + 132436.

It is an arithmetic number, because the mean of its divisors is an integer number (3177360).

Almost surely, 2^12444613 is an apocalyptic number.

It is an amenable number.

12444613 is a deficient number, since it is larger than the sum of its proper divisors (264827).

12444613 is an equidigital number, since it uses as much as digits as its factorization.

12444613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264826.

The product of its digits is 2304, while the sum is 25.

The square root of 12444613 is about 3527.6923051763. The cubic root of 12444613 is about 231.7361559108.

The spelling of 12444613 in words is "twelve million, four hundred forty-four thousand, six hundred thirteen".