40040440808 has 16 divisors (see below), whose sum is σ = 75819153060. Its totient is φ = 19822000000.

The previous prime is 40040440807. The next prime is 40040440819. The reversal of 40040440808 is 80804404004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40016801764 + 23639044 = 200042^2 + 4862^2 .

It is not an unprimeable number, because it can be changed into a prime (40040440807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24776693 + ... + 24778308.

Almost surely, 2^40040440808 is an apocalyptic number.

It is an amenable number.

40040440808 is a deficient number, since it is larger than the sum of its proper divisors (35778712252).

40040440808 is a wasteful number, since it uses less digits than its factorization.

40040440808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49555108 (or 49555104 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The spelling of 40040440808 in words is "forty billion, forty million, four hundred forty thousand, eight hundred eight".