Bithiah (בִּתְיָה) means "daughter of God" in Hebrew. In 1 Chronicles 4:18, Bithiah is identified as the Pharaoh's daughter who drew Moses from the Nile and adopted him — Jewish tradition gives her this name (Bat-Yah, "daughter of YHWH") in honor of her saving act.
Featured prominently in Cecil B. DeMille's The Ten Commandments (1956).
Bithiah 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 Bithiah reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.