40044404020 has 24 divisors (see below), whose sum is σ = 84121984800. Its totient is φ = 16012288032.

The previous prime is 40044403969. The next prime is 40044404027. The reversal of 40044404020 is 2040444004.

It is a junction number, because it is equal to n+sod(n) for n = 40044403982 and 40044404000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044404027) 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, 281850 + ... + 399409.

It is an arithmetic number, because the mean of its divisors is an integer number (3505082700).

Almost surely, 2^40044404020 is an apocalyptic number.

It is an amenable number.

40044404020 is an abundant number, since it is smaller than the sum of its proper divisors (44077580780).

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

40044404020 is a wasteful number, since it uses less digits than its factorization.

40044404020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684207 (or 684205 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40044404020 its reverse (2040444004), we get a palindrome (42084848024).

The spelling of 40044404020 in words is "forty billion, forty-four million, four hundred four thousand, twenty".