Prime Factorization of 3969 Factoring Prime Factors of 3969 Use the form below to do your conversion, separate numbers by comma. prime factorization calculator of 3969 Prime Factors of 3969 =3, 3, 3, 3, 7, 7 Which is the same as = 34 x 72 Prime Factors Tree of 3969 3969 / \3 1323