Search a number
deficient n.  and  oban n.

First numbers that belong to both sets:

3, 5, 7, 8, 9, 10, 11, 13, 15, 16, 17, 19, 23, 25, 26, 27, 29, 33, 35, 37, 38, 39, 50, 53, 55, 57, 58, 59, 63, 65, 67, 68, 69, 73, 75, 76, 77, 79, 83, 85, 86, 87, 89, 93, 95, 97, 98, 99, 303, 305, 307, 309, 310, 311, 313, 315, 316, 317, 319, 323, 325, 326, 327, 328, 329, 333, 335, 337, 338, 339, 353, 355, 356, 357, 358, 359, 363, 365, 367, 369, 370, 373, 375, 376, 377, 379, 383, 385, 386, 387, 388, 389, 393, 395, 397, 398, 399, 503, 505, 506, 507, 508, 509, 511, 512, 513, 515, 517, 518, 519, 523, 525, 526, 527, 529, 530, 533, 535, 536, 537, 538, 539, 553, 555, 556, 557, 559, 563, 565, 566, 567, 568, 569, 573, 575, 577, 578, 579, 583, 585, 586, 587, 589, 590, 593, 595, 596, 597, 598, 599, 603, 605, 607, 609, 610, 611, 613, 615, 617, 619, 623, 625, 626, 627, 628, 629, 633, 635, 637, 638, 639, 653, 655, 656, 657, 658, 659, 663, 665, 667, 668, 669, 670, 673, 675, 676, 677, 679, 683, 685, 686, 687, 688, 689, 693, 695, 697, 698, 699, 703, 705, 706, 707, 709, 710, 711, 712, 713, 715, 716, 717, 718, 719, 723, 725, 727, 729, 730, 733, 735, 737, 739, 753, 755, 757, 758, 759, 763, 765, 766, 767, 769, 773, 775, 776, 777, 778, 779, 783, 785, 787, 788, 789, 790, 793, 795, 796, 797, 799, 803, 805, 806, 807, 808, 809, 811, 813, 815, 817, 818, 819, 823, 825, 826, 827, 829, 830, 833, 835, 837, 838, 839, 850, 853, 855, 856, 857, 859, 863, 865.

Some larger examples :

965, 967, 969, 970, 973, 975, 976, 977, 979, 983, 985, 986, 987, 988, 989, 993, 995, 997, 998, 999.