9993

9993 is a natural number that follows 9992 and precedes 9994 in the sequence of integers. It is an odd number, as it cannot be evenly divided by 2. In the decimal system, it is written as "9993". In the binary numeral system, 9993 is represented as 1001101111001. The number 9993 is also a composite number, meaning it has factors other than 1 and itself. Its prime factors are 3 and 1111. The sum of the digits of 9993 is 21, which is a multiple of 3, confirming that 9993 is divisible by 3. Additionally, 9993 is a Harshad number, also known as a Niven number, because it is divisible by the sum of its digits. In recreational mathematics, 9993 is known for being the smallest number that can be expressed as the sum of two positive cubes in two different ways: 9993 = 10^3 + 9^3 = 18^3 + 1^3.