7999999

7999999 is an integer. It is an odd number, preceded by 7999998 and followed by 8000000. In scientific notation, it can be represented as approximately 7.999999 x 10^6. The number is composed of seven digits, all of which are nine except for the first digit, which is seven. It is a natural number and a whole number. The sum of its digits is 7 + 6 * 9 = 7 + 54 = 61. The number 7999999 is not a prime number. Its prime factorization is 7 * 1142857. The number 1142857 itself is a prime number. Therefore, the unique prime factors of 7999999 are 7 and 1142857. In Roman numerals, it would be represented as VII LXXXXIX LXXXXIX LXXXXIX, though this is an uncommon notation for such a large number. The number can also be expressed as 8 million minus 1.