Fait mathématique: 9770 is the number of Hamiltonian cycles of a 4×12 rectangle graph.
Culture générale: 9770 is an uninteresting number.
Date historique: September 30th is the day in 1986 that Mordechai Vanunu, who revealed details of Israel's covert nuclear program to British media, is kidnapped in Rome, Italy by the Israeli Mossad.