12444491 has 4 divisors (see below), whose sum is σ = 12496800. Its totient is φ = 12392184.

The previous prime is 12444473. The next prime is 12444503. The reversal of 12444491 is 19444421.

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 12444491 - 2¹⁰ = 12443467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12443491) 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, 25796 + ... + 26273.

It is an arithmetic number, because the mean of its divisors is an integer number (3124200).

Almost surely, 2^12444491 is an apocalyptic number.

12444491 is a deficient number, since it is larger than the sum of its proper divisors (52309).

12444491 is an equidigital number, since it uses as much as digits as its factorization.

12444491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52308.

The product of its digits is 4608, while the sum is 29.

The square root of 12444491 is about 3527.6750133764. The cubic root of 12444491 is about 231.7353986379.

The spelling of 12444491 in words is "twelve million, four hundred forty-four thousand, four hundred ninety-one".