998

998 is a natural number that follows 997 and precedes 999. It is even and composite. Its prime factorization is 2 × 499, so its only prime factors are 2 and 499. The divisors are 1, 2, 499, and 998. As a product of two primes, 998 is classified as a semiprime.

In numeral systems, 998 is written as CMXCVIII in Roman numerals; in binary it is 1111100110, and in hexadecimal it is 3E6. The decimal digits sum to 26, giving a digital root of 8.

The international telephone country code +998 is assigned to Uzbekistan, used when dialing to the country from abroad.

Historically, 998 is a year in the Gregorian calendar (AD 998), a point in the late 10th century. Without specifying events, it marks a place in medieval chronology.