44000400040 has 16 divisors (see below), whose sum is σ = 99000900180. Its totient is φ = 17600160000.

The previous prime is 44000400029. The next prime is 44000400043. The reversal of 44000400040 is 4000400044.

It can be written as a sum of positive squares in 2 ways, for example, as 36489404484 + 7510995556 = 191022^2 + 86666^2 .

44000400040 is a modest number, since divided by 400040 gives 440 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 44000399987 and 44000400023.

It is not an unprimeable number, because it can be changed into a prime (44000400043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550004961 + ... + 550005040.

Almost surely, 2^44000400040 is an apocalyptic number.

44000400040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44000400040 is an abundant number, since it is smaller than the sum of its proper divisors (55000500140).

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

44000400040 is a wasteful number, since it uses less digits than its factorization.

44000400040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100010012 (or 1100010008 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 44000400040 its reverse (4000400044), we get a palindrome (48000800084).

The spelling of 44000400040 in words is "forty-four billion, four hundred thousand, forty".