44444444440 has 128 divisors (see below), whose sum is σ = 112176368640. Its totient is φ = 15707520000.

The previous prime is 44444444413. The next prime is 44444444441. The reversal of 44444444440 is 4444444444.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 44444444393 and 44444444402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44444444441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4884295 + ... + 4893385.

It is an arithmetic number, because the mean of its divisors is an integer number (876377880).

Almost surely, 2^44444444440 is an apocalyptic number.

44444444440 is a gapful number since it is divisible by the number (40) 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 44444444440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56088184320).

44444444440 is an abundant number, since it is smaller than the sum of its proper divisors (67731924200).

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

44444444440 is a wasteful number, since it uses less digits than its factorization.

44444444440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9425 (or 9421 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 40.

44444444440 divided by its sum of digits (40) gives a palindrome (1111111111).

Adding to 44444444440 its reverse (4444444444), we get a palindrome (48888888884).

It can be divided in two parts, 444444 and 44440, that added together give a palindrome (488884).

The spelling of 44444444440 in words is "forty-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty".