8440044 has 48 divisors (see below), whose sum is σ = 20697600. Its totient is φ = 2673216.

The previous prime is 8440043. The next prime is 8440063. The reversal of 8440044 is 4400448.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8439996 and 8440023.

It is not an unprimeable number, because it can be changed into a prime (8440043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27339 + ... + 27645.

It is an arithmetic number, because the mean of its divisors is an integer number (431200).

Almost surely, 2^8440044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8440044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10348800).

8440044 is an abundant number, since it is smaller than the sum of its proper divisors (12257556).

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

8440044 is a wasteful number, since it uses less digits than its factorization.

8440044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 8440044 is about 2905.1753819692. The cubic root of 8440044 is about 203.6017798654.

The spelling of 8440044 in words is "eight million, four hundred forty thousand, forty-four".