Where it comes from
The line in the source
sold 1,364,544 retail copies in its first three days of release in Japan, according to Famitsu numbers
Explore / Mainline Pokémon video games / Figure
Record
Japan first-3-day retail units (Famitsu), 15-17 Nov 2019
1,364,544 units 15-17 Nov 2019
ReportedReported by a reliable secondary source, or read carefully from filed documents.