844

844 is a natural number that follows 843 and precedes 845. In mathematics, 844 is an even composite number with prime factorization 2^2 × 211. Its divisors are 1, 2, 4, 211, 422, and 844.

In numeral systems, 844 can be represented in several ways: in Roman numerals as DCCCXLIV, in binary as 1101001100, in octal as 1514, and in hexadecimal as 0x34C.

As a calendar year, 844 can denote years in the Common Era (CE) or Before Common Era (BCE) in historical timelines. The year 844 CE occurred during the early medieval period in Europe and the broader Eurasian region, while 844 BCE lies in the ancient era.

In telecommunications, 844 is one of the toll-free area codes within the North American Numbering Plan (NANP). It is used to designate toll-free telephone numbers, alongside other toll-free prefixes such as 800, 833, 855, 866, 877, and 888.