3809

3809 is an integer in the decimal number system. It is the product of two prime numbers, 13 and 293, making it a semiprime. It is odd and not a prime.

In number theory, 3809 can be written as 3809 = 13 × 293, with 13 and 293 both prime. The number is congruent to 1 modulo 4, since 3809 − 1 = 3808 is divisible by 4. It is not a perfect square, with a square root between 61 and 62 (since 61^2 = 3721 and 62^2 = 3844). As a semiprime, it serves as a simple example in discussions of factorization and primality.

In other domains, 3809 may be used as an identification code, such as for routes, model numbers, catalog entries, or fictional calendar references. The exact meaning of 3809 depends on the context in which it appears, and without additional information it is ambiguous.

See also: prime numbers 13 and 293, semiprimes, modular arithmetic.