9900

9900 is the natural number that comes after 9899 and before 9901. In decimal notation it is equal to 99 × 100 and is an even, composite number.

Its prime factorization is 2^2 × 3^2 × 5^2 × 11, which makes 9900 divisible by 4, 9, 11, 25, and many related combinations. Consequently, it has 54 positive divisors. It is a multiple of 100 and ends with two zeros, reflecting its factorization as 99 × 100.

As a Harshad number in base 10, 9900 meets the property that the sum of its digits, 9 + 9 + 0 + 0 = 18, divides 9900 (9900 ÷ 18 = 550).

In technology and culture, 9900 appears as a model number for various products. Notably, the BlackBerry Bold 9900, released in 2011, was a smartphone known for combining a touchscreen with a physical QWERTY keyboard. Beyond specific models, 9900 is used in pricing examples, product codes, and other numeric identifiers in diverse contexts.

Overall, 9900 is a highly composite, base-10 friendly number with several mathematical properties and occasional appearances in technology naming and labeling.