44040000040 has 32 divisors (see below), whose sum is σ = 99133420680. Its totient is φ = 17608280832.

The previous prime is 44040000013. The next prime is 44040000047. The reversal of 44040000040 is 4000004044.

It can be written as a sum of positive squares in 4 ways, for example, as 33315740676 + 10724259364 = 182526^2 + 103558^2 .

It is a junction number, because it is equal to n+sod(n) for n = 44039999969 and 44040000023.

It is not an unprimeable number, because it can be changed into a prime (44040000047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148359 + ... + 331798.

Almost surely, 2^44040000040 is an apocalyptic number.

44040000040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44040000040 is an abundant number, since it is smaller than the sum of its proper divisors (55093420640).

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

44040000040 is a wasteful number, since it uses less digits than its factorization.

44040000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482461 (or 482457 counting only the distinct ones).

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

Adding to 44040000040 its reverse (4000004044), we get a palindrome (48040004084).

The spelling of 44040000040 in words is "forty-four billion, forty million, forty", and thus it is an aban number and an eban number.