44440000040 has 64 divisors (see below), whose sum is σ = 102807774720. Its totient is φ = 17278272000.

The previous prime is 44440000019. The next prime is 44440000079. The reversal of 44440000040 is 4000004444.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 44439999967 and 44440000021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394445 + ... + 494435.

It is an arithmetic number, because the mean of its divisors is an integer number (1606371480).

Almost surely, 2^44440000040 is an apocalyptic number.

44440000040 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 44440000040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51403887360).

44440000040 is an abundant number, since it is smaller than the sum of its proper divisors (58367774680).

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

44440000040 is a wasteful number, since it uses less digits than its factorization.

44440000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100314 (or 100310 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 44440000040 its reverse (4000004444), we get a palindrome (48440004484).

The spelling of 44440000040 in words is "forty-four billion, four hundred forty million, forty", and thus it is an aban number.