8040000040 has 32 divisors (see below), whose sum is σ = 18673551360. Its totient is φ = 3112257600.

The previous prime is 8039999993. The next prime is 8040000047. The reversal of 8040000040 is 400000408.

It is a junction number, because it is equal to n+sod(n) for n = 8039999969 and 8040000023.

It is not an unprimeable number, because it can be changed into a prime (8040000047) 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, 3240696 + ... + 3243175.

It is an arithmetic number, because the mean of its divisors is an integer number (583548480).

Almost surely, 2^8040000040 is an apocalyptic number.

It is an amenable number.

8040000040 is an abundant number, since it is smaller than the sum of its proper divisors (10633551320).

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

8040000040 is a wasteful number, since it uses less digits than its factorization.

8040000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483913 (or 6483909 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 8040000040 is about 89666.0473088894. The cubic root of 8040000040 is about 2003.3277964809.

Adding to 8040000040 its reverse (400000408), we get a palindrome (8440000448).

The spelling of 8040000040 in words is "eight billion, forty million, forty", and thus it is an aban number and an uban number.