A386073 Primes having only {0, 4, 6, 9} as digits.
409, 449, 499, 4049, 4099, 4409, 4649, 4909, 4969, 4999, 6449, 6469, 6949, 9049, 9649, 9949, 40009, 40099, 40499, 40609, 40699, 40949, 44449, 44699, 44909, 46049, 46099, 46499, 46649, 49009, 49069, 49409, 49499, 49669, 49999, 60449, 60649, 64499, 64609, 64969
Offset: 1