9985

9985 is a natural number that follows 9984 and precedes 9986. In mathematics, it is an even composite number with a prime factorization of 5 × 1997. The number 1997 is prime, making 9985 the product of a single-digit prime and a four-digit prime. Its divisors are 1, 5, 1997, and 9985. Because it is not a perfect square, cube, or higher power, it does not belong to any special classes of figurate numbers, but its factorization gives it a divisor count of four, indicating a relatively simple divisor structure.

In the context of science and technology, the four-digit code 9985 does not correspond to a standard astronomical object designation, chemical identifier, or widely recognized standard. However, it appears in several cataloguing systems, such as being an HTTP status code in some custom implementations, and as part of serial numbers for equipment where manufacturers assign sequential identifiers.

Historically, the year 9985 CE is far beyond the current calendar era and has no recorded events. In fictional works, the number sometimes serves as a placeholder for a futuristic date or a designation for a starship, asteroid, or secret project, reflecting its use as a generic high-value identifier.

In popular culture, “9985” is occasionally used in puzzles, mathematics competitions, or trivia games that involve number properties, due to its relatively uncommon factorization and the presence of a four‑digit prime factor. The number also appears in some internet memes or as a random code in software testing, illustrating its utility as an arbitrary numeric example.