9000000008 has 8 divisors (see below), whose sum is σ = 16875000030. Its totient is φ = 4500000000.

The previous prime is 9000000001. The next prime is 9000000043. The reversal of 9000000008 is 8000000009.

It can be written as a sum of positive squares in only one way, i.e., 6474133444 + 2525866564 = 80462^2 + 50258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (9000000001) 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 as a sum of consecutive naturals, namely, 562499993 + ... + 562500008.

Almost surely, 2^9000000008 is an apocalyptic number.

It is an amenable number.

9000000008 is a deficient number, since it is larger than the sum of its proper divisors (7875000022).

9000000008 is a wasteful number, since it uses less digits than its factorization.

9000000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125000007 (or 1125000003 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 9000000008 is about 94868.3298472151. The cubic root of 9000000008 is about 2080.0838236682.

Subtracting from 9000000008 its reverse (8000000009), we obtain a palindrome (999999999).

The spelling of 9000000008 in words is "nine billion, eight", and thus it is an aban number and an uban number.