40040400044 has 24 divisors (see below), whose sum is σ = 74474749440. Its totient is φ = 18782360784.

The previous prime is 40040400031. The next prime is 40040400089. The reversal of 40040400044 is 44000404004.

It is a junction number, because it is equal to n+sod(n) for n = 40040399989 and 40040400025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549684 + ... + 2565339.

It is an arithmetic number, because the mean of its divisors is an integer number (3103114560).

Almost surely, 2^40040400044 is an apocalyptic number.

It is an amenable number.

40040400044 is a deficient number, since it is larger than the sum of its proper divisors (34434349396).

40040400044 is a wasteful number, since it uses less digits than its factorization.

40040400044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115149 (or 5115147 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40040400044 its reverse (44000404004), we get a palindrome (84040804048).

The spelling of 40040400044 in words is "forty billion, forty million, four hundred thousand, forty-four".