40440444040 has 32 divisors (see below), whose sum is σ = 91004679360. Its totient is φ = 16173745600.

The previous prime is 40440444007. The next prime is 40440444041. The reversal of 40440444040 is 4044404404.

It is not an unprimeable number, because it can be changed into a prime (40440444041) 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, 206325 + ... + 351355.

It is an arithmetic number, because the mean of its divisors is an integer number (2843896230).

Almost surely, 2^40440444040 is an apocalyptic number.

40440444040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40440444040 is an abundant number, since it is smaller than the sum of its proper divisors (50564235320).

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

40440444040 is a wasteful number, since it uses less digits than its factorization.

40440444040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152013 (or 152009 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40440444040 its reverse (4044404404), we get a palindrome (44484848444).

The spelling of 40440444040 in words is "forty billion, four hundred forty million, four hundred forty-four thousand, forty".