99000
99000, written ninety-nine thousand, is a natural number. It is a five-digit integer and equals the product 99 × 1000, illustrating its composition from round factors.
Mathematical properties: It is an even number and is divisible by 9 (the sum of its digits
Representations and usage: In scientific notation, 99000 equals 9.9 × 10^4. In time units, 99000 seconds is