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D-number  and  happy n.

First numbers that belong to both sets:

129, 219, 291, 921, 1257, 1299, 1527, 1821, 1851, 1857, 1929, 1959, 2019, 2157, 2181, 2199, 2487, 2517, 2571, 2811, 2901, 2991, 3153, 3315, 3351, 3513, 4287, 4449, 4827, 5127, 5187, 5199, 5331, 5721, 5799, 5919, 5979, 5991, 5997, 6879, 7251, 7851, 8121, 8157, 8247, 8511, 8571, 8751, 9201, 9687, 9759, 9921, 9957, 10029, 10221, 10299, 10533, 10581, 10587, 10599, 10815, 10821, 10851, 10929, 11181, 11283, 11541, 11559, 12009, 12021, 12057, 12081, 12099, 12219, 12279, 12297, 12333, 12381, 12399, 12729, 12813, 13323, 13557, 13929, 13989, 15027, 15033, 15303, 15357, 15537, 15591, 15909, 17229, 17553, 18021, 18111, 18201, 18399, 18489, 18813, 18831, 18969, 19029, 19059, 19689, 19983, 20019, 20109, 20157, 20199, 20211, 20487, 20571, 20751, 20847, 20901, 20991, 21057, 21081, 21129, 21321, 21381, 21483, 21729, 21921, 21927, 21993, 22179, 22443, 22467, 22647, 22719, 22917, 23181, 23811, 24243, 24267, 24483, 24537, 24573, 24627, 24657, 24807, 25107, 25743, 25797, 26457, 26547, 27129, 27453, 27543, 27597, 27957, 28011, 28047, 28113, 28131, 28311, 29091, 29217, 29499, 29577, 29721, 29901, 30531, 31281, 31299, 31503, 31755, 31821, 31881, 31989, 32133, 32199, 32313, 32811, 32919, 33123, 33213, 35031, 35103, 35157, 35517, 36789, 36987, 37551, 37767, 38679, 38697, 38769, 38919, 39129, 39189, 39687, 39891, 39981, 41889, 42087, 42243, 42753, 42843, 43257, 44049, 44223, 44553, 44853, 45273, 45483, 45561, 45651, 45699, 45723, 45777, 45867, 46857, 47523, 47577, 47757, 48189, 48207, 48423, 48567, 48819, 49299, 49659, 50187, 50781, 50811, 50979, 51033, 51081, 51087, 51099, 51141, 51159, 51411, 51573, 51951, 52347, 52467, 52473, 52743, 52797, 52977, 53247, 53517, 54267, 54543, 54651, 54687, 54699, 54867, 55137, 55191, 55317, 55371, 55443, 55569, 55659, 55911, 56247, 57153, 57243, 57423, 57747, 57801, 57927, 58467, 59091, 59097, 59151, 59277, 61989, 62229, 62247, 62427, 62547, 64257, 64551, 64587.

Some larger examples :