1111011001

1111011001 is a binary numeral consisting of ten bits. In binary notation, each position represents a power of two, from 2^9 down to 2^0, and the pattern can be used to illustrate binary arithmetic and bit-level operations in computing contexts.

As an unsigned integer, 1111011001 equals 985 in decimal. In hexadecimal, the same pattern corresponds to 0x3D9. If interpreted as a signed value in 10-bit two's complement representation, the most significant bit is 1, indicating a negative number; in that interpretation, 1111011001 represents -39, since 1024 − 985 = 39.

The string may also appear in educational materials and problem sets to demonstrate conversions among binary, decimal, and hexadecimal formats, as well as to explore bitwise manipulation, masking, and small-range addressing in constrained systems. In programming contexts, binary literals are supported in various languages (for example, 0b1111011001 in some languages), though syntax and availability can vary by language and compiler.

Overall, 1111011001 is primarily notable as a ten-bit binary pattern used for teaching and illustrating basic numeric representations, rather than as a standard identifier or widely recognized constant.