Sudan Population 40,187,000 Capital Khartoum; 4,286,000 Area 2,505,813 square kilometers (967,500 square miles) Language Arabic, Nubian, Ta Bedawie, many local dialects Religion Sunni Muslim, indigenous beliefs, Christian Currency Sudanese dinar Life Expectancy 57 GDP per Capita U.S. $1,400 Literacy Percent 61