40008004004 has 12 divisors (see below), whose sum is σ = 70029960924. Its totient is φ = 19999443744.

The previous prime is 40008003979. The next prime is 40008004021. The reversal of 40008004004 is 40040080004.

It can be written as a sum of positive squares in 2 ways, for example, as 22951644004 + 17056360000 = 151498^2 + 130600^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119779 + ... + 1154954.

It is an arithmetic number, because the mean of its divisors is an integer number (5835830077).

Almost surely, 2^40008004004 is an apocalyptic number.

It is an amenable number.

40008004004 is a deficient number, since it is larger than the sum of its proper divisors (30021956920).

40008004004 is a wasteful number, since it uses less digits than its factorization.

40008004004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279134 (or 2279132 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 40008004004 its reverse (40040080004), we get a palindrome (80048084008).

The spelling of 40008004004 in words is "forty billion, eight million, four thousand, four".