Numbers 490,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

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492,205

[Math.]  A printer’s error number: 492205 = 492205 = 492×205.

It is still true for 0’s added to the right side of the number. (by B.J. van der Zwaag, References [17])

 

494,209

[Math.]   88+209 = 297 and 88,209 = 2972 and 494+209 = 703 and 494,209 = 7032 and 297+703 = 1000.

 

494,209

[Math.]  Sum of the first 37 cube numbers:

13+23+…+363+373 = 494,209 = (1+2+…+36+37)2 = 7032.

 

498,960

[Phone]  The number of first 6 digits available for an NANPA/U.S. telephone numbers is: 630×792 = 498,960.

 

499,393

[Math.]  One of Markov numbers are… 75025, 96557, 135137, 195025, 196418, 294685, 426389, 499393, 514229, 646018, 925765…

 

499,499

[Math.]  (Sequence of numbers 49…949…9).

4994992 = 249,499,251,001 = (249+499251–001)2.

 

499,500

[Math.]  (Sequence of numbers 49…950…0).

499,5002 = 249,500,250,000 = (249500+250000)2.

 499,5003 = 124,625,374,875,000,000 = (124625+374875+000000)3

499,5004 = 62,250,374,750,062,500,000,000 = (62250+374750+062500+000000)4

[Math.]   249,500,250,000 = (249,500+250,000)2 = 499,5002 and

250,500,250,000 = (250,500+250,000)2 = 500,5002 and 499,500+500,500 = 1,000,000. (Sequence of numbers 49…950…0 and 50…050…0).

 

[Math.]  Sum (in degrees) of all internal angles of a 2777-side polygon.

 

499,997 & 499,999

[Math.]

94 = 47×2 and, reversely, 49 = 47+2

994 = 497×2 and, reversely, 499 = 497+2

9994 = 4997×2 and, reversely, 4999 = 4997+2

99994 = 49997×2 and, reversely, 49999 = 49997+2

999994 =  499997×2 and, reversely, 499999 = 499997+2

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499,999

[Math.]  Its odd powers end with 499,999. Its even powers end with 000,001.