Yes, 99 is a composite number.

A composite number is a positive integer that has more than two distinct divisors (factors). In the case of 99, its factors are 1, 3, 9, 11, 33, and 99. Since 99 has divisors other than just 1 and itself, it is classified as a composite number.

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Here are some related questions:

1. What is the definition of a prime number?
2. How can we find the factors of a composite number?
3. What are the prime factors of 99?
4. Can a number be both prime and composite?
5. What are some examples of composite numbers below 100?

Tip: Composite numbers always have more than two divisors, while prime numbers have exactly two: 1 and the number itself.