9902

9902 is a natural number that comes after 9901 and before 9903. In decimal notation it is written as 9902 and is an even integer.

Arithmetic and number-theoretic properties: 9902 factors as 2 × 4951. The cofactor 4951 is a prime number, making 9902 a semiprime (the product of two primes, 2 and 4951). The digit sum of 9902 is 9 + 9 + 0 + 2 = 20, so it is not divisible by 3 or 9. It is congruent to 2 modulo 3 and 2 modulo 4.

Representations in other bases: In binary, 9902 is 10011010101110. In hexadecimal, it is 0x26AE. In octal, it is 23256. These representations reflect standard base-conversion results for this number.

用途 and occurrences: As a numeric designation, 9902 appears in various contexts such as catalog numbers, model identifiers, or part codes. Because it is a fairly ordinary four-digit number, there is no single widely recognized meaning attached to 9902 beyond its role as a numeral in arithmetic and classification schemes.

See also: semiprime, base conversion, integer.