Properties of the Number -999999

Nine Hundred Ninety-Nine Thousand Nine Hundred Ninety-Nine

Basics

Value: -1000000 → -999999 → -999998

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 54

Digital Root: 9

Palindrome: Yes

Factorization: 3 ³ × 7 × 11 × 13 × 37

Divisors: 1, 3, 7, 9, 11, 13, 21, 27, 33, 37

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11110100001000111111

Octal: -3641077

Duodecimal: -402853

Hexadecimal: -f423f

Square: 999998000001

Square Root: 999.999499999875

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = 1 - n⁶. A24004

a(n) = 10ⁿ - 1. A2283

a(n)³ is smallest cube containing exactly n 9's. A48374

Largest number whose 4th power has n digits. A114322

The sequence S = a(1), a(2), ... is defined by a(1)=1, if d,e,f are consecutive digits then we do not have d >= e > f, and S is always extended with the smallest integer not yet present in S. A239215

Largest number whose cube has n digits. A61439

Numbers m such that the largest digit in the decimal expansion of 1/m is 1. A333402

Numbers k such that k concatenated with k-3 gives the product of two numbers which differ by 4. A116136

Largest number whose square has n digits. A49416

Odd abundant numbers not divisible by 5. A64001