12444813 has 8 divisors (see below), whose sum is σ = 18436800. Its totient is φ = 8296524.

The previous prime is 12444787. The next prime is 12444823. The reversal of 12444813 is 31844421.

It is not a de Polignac number, because 12444813 - 2⁶ = 12444749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 460919 = 12444813 / (1 + 2 + 4 + 4 + 4 + 8 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230433 + ... + 230486.

It is an arithmetic number, because the mean of its divisors is an integer number (2304600).

Almost surely, 2^12444813 is an apocalyptic number.

It is an amenable number.

12444813 is a deficient number, since it is larger than the sum of its proper divisors (5991987).

12444813 is an equidigital number, since it uses as much as digits as its factorization.

12444813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460928 (or 460922 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 12444813 is about 3527.7206522059. The cubic root of 12444813 is about 231.7373973310.

The spelling of 12444813 in words is "twelve million, four hundred forty-four thousand, eight hundred thirteen".