369 (number)
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Template:Infobox number 369 (three hundred [and] sixty-nine) is the natural number following 368 and preceding 370.
In mathematics
369 is the magic constant of the 9 × 9 magic square<ref>Template:Cite book</ref><ref name="A006003">Sequence A006003 in OEIS.</ref> and the n-Queens Problem for n = 9.<ref name="A006003"/>
There are 369 free octominoes (polyominoes of order 8).<ref>Template:Cite journal</ref><ref>Sequence A000105 in OEIS.</ref>
369 is a Ruth-Aaron Pair with 370. The sums of their prime factors are equivalent.<ref>Template:Cite web</ref>