404040000040 has 64 divisors (see below), whose sum is σ = 966411648000. Its totient is φ = 151593926400.

The previous prime is 404039999989. The next prime is 404040000047. The reversal of 404040000040 is 40000040404.

It is a junction number, because it is equal to n+sod(n) for n = 404039999969 and 404040000023.

It is not an unprimeable number, because it can be changed into a prime (404040000047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2555080 + ... + 2708599.

It is an arithmetic number, because the mean of its divisors is an integer number (15100182000).

Almost surely, 2^404040000040 is an apocalyptic number.

404040000040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404040000040 is an abundant number, since it is smaller than the sum of its proper divisors (562371647960).

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

404040000040 is a wasteful number, since it uses less digits than its factorization.

404040000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263810 (or 5263806 counting only the distinct ones).

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

Adding to 404040000040 its reverse (40000040404), we get a palindrome (444040040444).

The spelling of 404040000040 in words is "four hundred four billion, forty million, forty", and thus it is an aban number.