9008999 has 4 divisors (see below), whose sum is σ = 9080064. Its totient is φ = 8937936.

The previous prime is 9008981. The next prime is 9009017. The reversal of 9008999 is 9998009.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9008981) and next prime (9009017).

It is a cyclic number.

It is not a de Polignac number, because 9008999 - 2¹⁶ = 8943463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9008969) 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, 35342 + ... + 35595.

It is an arithmetic number, because the mean of its divisors is an integer number (2270016).

Almost surely, 2^9008999 is an apocalyptic number.

9008999 is a deficient number, since it is larger than the sum of its proper divisors (71065).

9008999 is a wasteful number, since it uses less digits than its factorization.

9008999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71064.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 9008999 is about 3001.4994586040. The cubic root of 9008999 is about 208.0776876345.

The spelling of 9008999 in words is "nine million, eight thousand, nine hundred ninety-nine".