4443888944 has 80 divisors (see below), whose sum is σ = 9963648000. Its totient is φ = 1897620480.

The previous prime is 4443888937. The next prime is 4443888947. The reversal of 4443888944 is 4498883444.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4443888944.

It is not an unprimeable number, because it can be changed into a prime (4443888947) 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, 2222057 + ... + 2224055.

It is an arithmetic number, because the mean of its divisors is an integer number (124545600).

Almost surely, 2^4443888944 is an apocalyptic number.

4443888944 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4443888944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4981824000).

4443888944 is an abundant number, since it is smaller than the sum of its proper divisors (5519759056).

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

4443888944 is a wasteful number, since it uses less digits than its factorization.

4443888944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778 (or 2772 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 56.

The square root of 4443888944 is about 66662.5002831427. The cubic root of 4443888944 is about 1644.0728809378.

The spelling of 4443888944 in words is "four billion, four hundred forty-three million, eight hundred eighty-eight thousand, nine hundred forty-four".