249 (number)

← 248 249 250 →
← 240 241 242 243 244 245 246 247 248 249 → List of numbers ; Integers ; ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred forty-nine
Ordinal	249th; (two hundred forty-ninth)
Factorization	3 × 83
Greek numeral	ΣΜΘ´
Roman numeral	CCXLIX, ccxlix
Binary	111110012
Ternary	1000203
Senary	10536
Octal	3718
Duodecimal	18912
Hexadecimal	F916

Last updated February 22, 2025

249 (two hundred [and] forty-nine) is the natural number following 248 and preceding 250.

Additionally, 249 is:

a Blum integer.^[1]
a semiprime.
palindromic in base 82 (33₈₂).
a Harshad number in bases 3, 83, 84, 124, 167 and 247.
the aliquot sum of any of these numbers: 375, 531, 1687, 4351, 7807, 12127, 14647 and 15151.
part of the 3-aliquot tree. The aliquot sequence starting at 288 is: 288, 531, 249, 87, 33, 15, 9, 4, 3, 1, 0.

References

↑ "Sloane's A016105 : Blum integers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.

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[1] "Sloane's A016105 : Blum integers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.

[1]