9999999

The number 9999999 is an integer represented by seven consecutive nines. In standard decimal notation, it follows the number 9999998 and precedes the number 10000000. It is a composite number, meaning it is divisible by numbers other than 1 and itself. Its prime factorization is 7 × 11 × 13 × 101 × 127.

In various mathematical contexts, numbers consisting of repeating digits can have special properties. For instance, the number 9999999 is equal to 10^7 - 1. This relationship is important in understanding number theory and algebraic structures. The number can also be expressed as the sum of powers of ten: 9 * 10^6 + 9 * 10^5 + 9 * 10^4 + 9 * 10^3 + 9 * 10^2 + 9 * 10^1 + 9 * 10^0.

The magnitude of 9999999 places it just below ten million. In scientific notation, it is approximately 9.999999 x 10^6. While not a commonly cited constant or a number with widespread cultural significance, it serves as a clear example of a large integer with a distinctive pattern of digits. Its mathematical properties, such as its prime factorization, are subjects of study within number theory.