וַיִּתֵּ֥ן יוֹאָ֛ב אֶת־מִסְפַּ֥ר מִפְקַד־הָעָ֖ם אֶל־הַמֶּ֑לֶךְ וַתְּהִ֣י יִשְׂרָאֵ֡ל שְׁמֹנֶה֩ מֵא֨וֹת אֶ֤לֶף אִֽישׁ־חַ֙יִל֙ שֹׁ֣לֵֽף חֶ֔רֶב וְאִ֣ישׁ יְהוּדָ֔ה חֲמֵשׁ־מֵא֥וֹת אֶ֖לֶף אִֽישׁ׃
And Joab gave up the sum of the numbering of the people unto the king; and there were in Israel eight hundred thousand valiant men that drew the sword; and the men of Judah were five hundred thousand men.
Read Kabbalistic (mystical) interpretations of II Samuel 24:9: Zohar and classical Jewish mystical sources, free online.