Recognised as Number
-394
- Negative
- Even
- 3 digits
-394 is an even 3-digit integer and the negative of 394. It has 4 divisors and a digital root of 7.
Number properties
ParityEvendivisible by 2
SignNegative
Absolute value394
Digit count3
Digit sum16
Digit product108
Multiplicative persistence2times the digit product can be taken before one digit is left
Digital root7repeated digit sum
PalindromicNoreads differently backwards
Factors & divisors
Prime factorisation−1 × 2 × 197
Distinct prime factors22, 197
Number of divisors4
Sum of divisors σ(n)594
SquarefreeYesno repeated prime factor
All divisors1, 2, 197, 3944 in total
Arithmetic
Representations
Decimal-394
Binary1100010109 bits
Octal612
Hexadecimal18A
Base 36AY
In wordsminus three hundred and ninety-four
Ordinalminus three hundred and ninety-fourth
Scientific notation-3.94 × 10^2
Engineering notation-394
In other bases
Ternary112121base 3; the most digit-efficient integer base after e: 6 digits
Quinary3034base 5; one hand: 4 digits
Septenary1102base 7: 4 digits
Nonary477base 9; each digit is two ternary digits: 3 digits
Duodecimal28abase 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 3 digits
Vigesimaljebase 20; hands and feet, and the Mayan and Yoruba systems: 2 digits
Sexagesimal6:34base 60; Babylonian, and still how an hour and a circle are divided: 2 digits
Balanced ternaryT11011Tdigits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary1110001010base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
1111111001110110
Bit length9 bitsto write the magnitude
Set bits4the population count, or Hamming weight
Zero bits5within that length
Bit parityeven4 set bits, so even; not the same as the number itself being even
Highest set bitbit 8worth 256
Lowest set bitbit 11 trailing zero
Power of twoNo
Bytes201 8a
Gray code101001111n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
16-bit1111111001110110two's complement
32-bit11111111111111111111111001110110two's complement
64-bit1111111111111111111111111111111111111111111111111111111001110110two's complement
One's complement0000000110001001at 16 bits, every bit flipped
Bits reversed0110111001111111at 16 bits
Rotated left by 11111110011101101at 16 bits, wrapping
Shifted left by 1-1100010100= -788, no wrap
Shifted right by 1-11000101= -197, discarding the low bit
These bits as a double1.94661864 × 10^-321≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Powers & multiples
-394 to the power 2155,236
-394 to the power 3-61,162,984
-394 to the power 424,098,215,696
-394 to the power 5-9,494,696,984,224
First ten multiples-394, -788, -1,182, -1,576, -1,970, -2,364, -2,758, -3,152, -3,546, -3,940
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 1
Divisible by 4No, remainder 2
Divisible by 5No, remainder 4
Divisible by 6No, remainder 4
Divisible by 7No, remainder 2
Divisible by 8No, remainder 2
Divisible by 9No, remainder 7
Divisible by 10No, remainder 4
Divisible by 11No, remainder 9
Divisible by 12No, remainder 10
Divisible by 100No, remainder 94
As a percentage & fraction
As a percentage-39,400%
-394% as a decimal-3.94
-394% of 100-394
-394% of 1,000-3,940
As a fraction of 100-394/100
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