1001001001

1001001001 is a binary numeral, a ten-digit string composed of the digits 0 and 1. In base-2 notation, it represents a specific integer when read as powers of two in descending order.

Its decimal value is 585. In other common bases, it corresponds to 0x249 in hexadecimal and 1111 in octal (base 8). This makes the binary pattern convenient for illustrating conversions between number systems.

The string is a palindrome, meaning it reads the same forwards and backwards. It has ones at the bit positions 9, 6, 3, and 0 (counting from zero on the right), so it can be expressed as 2^9 + 2^6 + 2^3 + 2^0, which sums to 585.

In practical terms, 1001001001 is often encountered as a simple, symmetric binary example used in introductory discussions of binary-to-decimal conversion, digital symmetry, or binary pattern recognition. While it does not carry special mathematical significance beyond its palindromic structure and its exact decimal value, its regular pattern can help illustrate how binary digits map to powers of two and how base conversions preserve numerical value across representations.