40040400004 has 24 divisors (see below), whose sum is σ = 77197611456. Its totient is φ = 18019980000.

The previous prime is 40040399977. The next prime is 40040400007. The reversal of 40040400004 is 40000404004.

It is not an unprimeable number, because it can be changed into a prime (40040400007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4500552 + ... + 4509439.

It is an arithmetic number, because the mean of its divisors is an integer number (3216567144).

Almost surely, 2^40040400004 is an apocalyptic number.

40040400004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40040400004 is a deficient number, since it is larger than the sum of its proper divisors (37157211452).

40040400004 is a wasteful number, since it uses less digits than its factorization.

40040400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9010107 (or 9010105 counting only the distinct ones).

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

Adding to 40040400004 its reverse (40000404004), we get a palindrome (80040804008).

It can be divided in two parts, 40040 and 400004, that added together give a palindrome (440044).

The spelling of 40040400004 in words is "forty billion, forty million, four hundred thousand, four".