Dayang is from the Malay dayang — maiden, lady-in-waiting, princess (also a Bruneian royal title). Dayang is one of the Malay-Indonesian feminine honorific names — used historically across the Bruneian sultanate + the broader Malay archipelago to denote royal + noble feminine status. In Brunei, Dayang is the official honorific title for non-royal women (equivalent to Mrs.
Dayang does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Dayang reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.