3,140,000 in Mauritania (2013 J. Leclerc), increasing. Total users in all countries: 3,760,000.
3 (Wider communication). Statutory language of national identity (1991, Constitution, Article 6).
None known. Not intelligible with other Arabic varieties. The Nemadi (Ikoku) are an ethnic group of 200 (1967) that speak Hassaniyya, but they have special morphemes for dogs, hunting, and houses. Nomadic between Mali and Mauritania.
White Maure are called Bithan, also used for Maures in general. Black Maures are called Haratine. Muslim.