Cameroon (full name, Republic of Cameroon) covers an area of approximately 475,000 sq km. Its terrain consists of a varied terrain, with a coastal plain in southwest, a dissected central plateau, mountains in the west and plains in the north. Cameroon borders the Central African Republic, Chad, the Republic of the Congo, Equatorial Guinea, Gabon and Nigeria, and has 402 km of coastline. The country is divided into 10 provinces: Adamaoua, Centre, Est, Extreme-Nord, Littoral, Nord, Nord-Ouest, Ouest, Sud and Sud-Ouest. Yaounde is the capital, with a time difference of 1 hour ahead of GMT. The currency is the CFA (Communaute Financiere Africaine) franc, and exports include crude oil, petroleum products, timber, cocoa, aluminium, coffee and cotton. The population of approximately 19,000,000 people has an ethnic mix including 31% Cameroon Highlanders and 10% Equatorial Bantu. Primary languages are French, English and the languages of Bantu, Semi-Bantu and Sudanic groups, and the predominant religions are indigenous beliefs, Christianity and Islam.