1. 4000 (number)4000 (four thousand) is the natural number following 3999 and preceding 4001. It is a decagonal number.
Read “4000 (number)” on English Wikipedia
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Read “4000 (number)” on DBpedia
Read “4000 (number)” on English Wikipedia
Read “4000” on Japanese Wikipedia
Read “4000 (number)” on DBpedia
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