9899

9899 is a natural number that comes after 9898 and before 9900. In decimal notation it is written as 9899, or 9,899 in locales that use comma separators for thousands. It is an odd four-digit integer.

In mathematics, 9899 is a composite number. Its prime factorization is 19 × 521, so it is a semiprime, defined as a product of exactly two primes. Because the two primes are distinct, its positive divisors are exactly 1, 19, 521, and 9899.

In other representations, 9899 equals 0x26AB in hexadecimal. In binary, it is 10011010101011, which confirms its value in base 2.

As a semiprime with two distinct prime factors, 9899 has four positive divisors and serves as a straightforward example in discussions of divisor structure and basic number theory. While not notable for any special mathematical identity beyond its factorization, 9899 is often cited as a concrete instance of a semiprime in introductory treatments of integer factorization.