40044484840 has 32 divisors (see below), whose sum is σ = 90327079080. Its totient is φ = 15977440512.

The previous prime is 40044484807. The next prime is 40044484847. The reversal of 40044484840 is 4848444004.

It can be written as a sum of positive squares in 4 ways, for example, as 37124811684 + 2919673156 = 192678^2 + 54034^2 .

It is a super-2 number, since 2×40044484840² (a number of 22 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 40044484793 and 40044484802.

It is not an unprimeable number, because it can be changed into a prime (40044484847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244967 + ... + 1276726.

Almost surely, 2^40044484840 is an apocalyptic number.

40044484840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40044484840 is an abundant number, since it is smaller than the sum of its proper divisors (50282594240).

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

40044484840 is a wasteful number, since it uses less digits than its factorization.

40044484840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522101 (or 2522097 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 40.

It can be divided in two parts, 4004 and 4484840, that added together give a palindrome (4488844).

The spelling of 40044484840 in words is "forty billion, forty-four million, four hundred eighty-four thousand, eight hundred forty".