369 (number)

← 368 369 370 →
Cardinal three hundred sixty-nine
Ordinal 369th
(three hundred sixty-ninth)
Factorization 32× 41
Divisors 1, 3, 9, 41, 123, 369
Greek numeral ΤΞΘ´
Roman numeral CCCLXIX
Binary 1011100012
Ternary 1112003
Quaternary 113014
Quinary 24345
Senary 14136
Octal 5618
Duodecimal 26912
Hexadecimal 17116
Vigesimal I920
Base 36 A936

Three hundred sixty-nine is the natural number following three hundred sixty-eight and preceding three hundred seventy.

In mathematics

369 is the magic constant of the 9 × 9 magic square[1][2] and the n-Queens Problem for n = 9.[2]

There are 369 free octominoes (polyominoes of order 8).[3][4]

In other fields

369 is also:

References

  1. ↑ Kraitchik, M (1942). "Magic Squares". Mathematical Recreations. New York: Norton. pp. 142–192.
  2. 1 2 Sequence A006003 in OEIS.
  3. ↑ Redelmeier, D. Hugh (1981). "Counting polyominoes: yet another attack". Discrete Mathematics. 36: 191–203. doi:10.1016/0012-365X(81)90237-5.
  4. ↑ Sequence A000105 in OEIS.
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