10,989
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Number
$10,989$ (ten thousand, nine hundred and eighty-nine) is:
- $3^3 \times 11 \times 37$
- The $2$nd number which is reversed when multiplied by $9$:
- $10 \, 989 \times 9 = 98 \, 901$
- The $1$st of only $2$ numbers with $5$ digits or which has a multiple which is its reversal:
- $10 \, 989 \times 9 = 98 \, 901$
Also see
- Previous ... Next: Numbers Reversed when Multiplying by 9
- Previous ... Next: Ratio of Number to Reversal which is Multiple
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $10,989$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $10,989$