9000990009 has 48 divisors (see below), whose sum is σ = 14484210624. Its totient is φ = 5340556800.

The previous prime is 9000989971. The next prime is 9000990071.

9000990009 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9000990009 - 2²¹ = 8998892857 is a prime.

It is a super-2 number, since 2×9000990009² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9000990209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 985554 + ... + 994644.

It is an arithmetic number, because the mean of its divisors is an integer number (301754388).

Almost surely, 2^9000990009 is an apocalyptic number.

9000990009 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

9000990009 is a deficient number, since it is larger than the sum of its proper divisors (5483220615).

9000990009 is a wasteful number, since it uses less digits than its factorization.

9000990009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9318 (or 9315 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 9000990009 is about 94873.5474671418. The cubic root of 9000990009 is about 2080.1600906890.

The spelling of 9000990009 in words is "nine billion, nine hundred ninety thousand, nine".