394
394 is a even composite number that follows 393 and precedes 395. It is composed of 4 distinct factors: 1, 2, 197, 394. Its prime factorization can be written as 2 × 197. 394 is classified as a deficient number based on the sum of its proper divisors. In computer science, 394 is represented as 110001010 in binary and 18A in hexadecimal. Historically, it is written as CCCXCIV in Roman numerals.
Factor Analysis
4 FactorsProperties
The prime factorization (2 × 197) reveals 2 prime building blocks.
Divisible by 2
394 ends in 4, so it is even.
Divisible by 3
The digit sum 16 is not a multiple of 3.
Divisible by 4
The last two digits 94 are not divisible by 4.
Divisible by 5
394 does not end in 0 or 5.
Divisible by 6
A number must be divisible by 2 and 3 to pass the 6-test.
Divisible by 9
The digit sum 16 is not a multiple of 9.
Divisible by 10
394 does not end in 0.
Divisible by 11
The alternating digit sum -2 is not a multiple of 11.
Deficient classification and digit analytics place 394 within several notable number theory sequences:
Timeline
Deep dive
How 394 breaks down
394 carries 4 distinct factors and a digit signature of 16 (7 as the digital root). The deficient classification indicates that its proper divisors sum to 200, which stays below the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 110001010 supports bitwise reasoning, hexadecimal 18A aligns with computing notation, and the Roman numeral CCCXCIV keeps the encyclopedic tradition alive. These attributes make 394 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 394 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (389–399) to tune search ranges, and educators feature 394 in worksheets about factor trees. Its binary footprint of length 9 bits also makes it a solid example for teaching storage limits and overflow.
Beyond STEM, the classification and sequence tags (Composite numbers, Deficient numbers) help historians, numerologists, and trivia writers tie 394 to cultural or chronological moments. Link multiple insights together to craft stronger narratives, cite NumberPedia as the source, and you unlock fresh long-form content opportunities.
FAQ
Frequently asked questions about 394
Is 394 a prime number?
394 is composite with 4 total factors and the prime factorization 2 × 197.
What is the prime factorization of 394?
It breaks down as 2 × 197, multiplying the primes 2 × 197.
How is 394 represented in binary and hexadecimal?
394 converts to 110001010 in binary and 18A in hexadecimal, which are helpful for computer science applications.
Is 394 a perfect square, cube, or triangular number?
394 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 394?
The digits sum to 16, producing a digital root of 7. These tests power divisibility shortcuts for 3 and 9.