Libya (Arabic: ليبيا Lībiyā; Libyan vernacular: Lībya; Amazigh: ), officially the Great Socialist People's Libyan Arab Jamahiriya ( الجماهيرية العربية الليبية الشعبية الإشتراكية العظمى Al-Jamāhīriyyah al-`Arabiyyah al-Lībiyyah aš-Ša`biyyah al-Ištirākiyyah al-`Uhmā), is a country in North Africa. Bordering the Mediterranean Sea to the north, Libya lies between Egypt to the east, Sudan to the southeast, Chad and Niger to the south, and Algeria and Tunisia to the west. With an area of almost 1.8 million square kilometres (700,000 sq mi), 90% of which is desert, Libya is the fourth largest country in Africa by area, and the 17th largest in the world. The capital, Tripoli, is home to 1.7 million of Libya's 5.7 million people. The three traditional parts of the country are Tripolitania, the Fezzan and Cyrenaica.