12440844 has 48 divisors (see below), whose sum is σ = 34739040. Its totient is φ = 3827520.

The previous prime is 12440819. The next prime is 12440851. The reversal of 12440844 is 44804421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3027 + ... + 5834.

It is an arithmetic number, because the mean of its divisors is an integer number (723730).

Almost surely, 2^12440844 is an apocalyptic number.

It is an amenable number.

12440844 is an abundant number, since it is smaller than the sum of its proper divisors (22298196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12440844 is a wasteful number, since it uses less digits than its factorization.

12440844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887 (or 8879 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 12440844 is about 3527.1580628035. The cubic root of 12440844 is about 231.7127588591.

The spelling of 12440844 in words is "twelve million, four hundred forty thousand, eight hundred forty-four".