Gabon (full name, The Gabonese Republic) covers an area of approximately 268,000 sq km. Its terrain consists of a narrow coastal plain with a hilly interior and savanna in the east and south. Gabon borders Cameroon, Republic of the Congo and Equatorial Guinea, and has 885 km of coastline. The country is divided into 9 provinces: Estuaire, Haut-Ogooue, Moyen-Ogooue, Ngounie, Nyanga, Ogooue-Ivindo, Ogooue-Lolo, Ogooue-Maritime and Woleu-Ntem. Libreville 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, timber, manganese and uranium. The population of approximately 1,500,000 people has an ethnic mix including 4 Bantu tribal groupings (Fang, Bapounou, Nzebi and Obamba). Primary languages are French and Bantu-group languages, and the predominant religion is Christianity.