Evgenia is from the Greek Ευγενία / Russian Евгения (Evgenia — noble, well-born) — from Greek eu (good) + genos (birth/lineage). Evgenia is one of the Greek + Russian feminine names — central to traditional Eastern Orthodox heritage. CE legend of cross-dressing as monk.
Evgenia 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 Evgenia reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.