The king thereupon adopted the Muslim title and name (in Arabic) of Sultan (besides the old Divehi title of "Maha Radun" or "Ras Kilege" or "Rasgefānu") Muhammad ibn Abdullah, initiating a series of six Islamic dynasties consisting of eighty-four sultans and sultanas that lasted until 1932 when the sultanate became elective. The formal title of the Sultan up to 1965 was, "Sultan of Land and Sea, Lord of the twelve-thousand islands and Sultan of the Maldives" which came with the style "Highness".