9009000008 has 16 divisors (see below), whose sum is σ = 16898146560. Its totient is φ = 4502827600.

The previous prime is 9009000001. The next prime is 9009000023. The reversal of 9009000008 is 8000009009.

It is a happy number.

It is a super-2 number, since 2×9009000008² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9009000001) 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, 186008 + ... + 229383.

It is an arithmetic number, because the mean of its divisors is an integer number (1056134160).

Almost surely, 2^9009000008 is an apocalyptic number.

It is an amenable number.

9009000008 is a deficient number, since it is larger than the sum of its proper divisors (7889146552).

9009000008 is a wasteful number, since it uses less digits than its factorization.

9009000008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418108 (or 418104 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 9009000008 is about 94915.7521594809. The cubic root of 9009000008 is about 2080.7769539501.

The spelling of 9009000008 in words is "nine billion, nine million, eight", and thus it is an aban number and an uban number.