Properties of the Number -990001

Nine Hundred Ninety Thousand One

Basics

Value: -990002 → -990001 → -990000

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 990001

Divisors: 1, 990001

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11110001101100110001

Octal: -3615461

Duodecimal: -3B8B01

Hexadecimal: -f1b31

Square: 980101980001

Square Root: 994.9879396254007

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

Smallest n-digit number m such that φ(10ⁿ+1)=φ(m), gcd(10ⁿ+1,m)=1 and 10 does not divide m, or zero if there is no such m. A147547

Primes of the form k³-k²+1, k>0. A162292

Numbers k such that k and k² use only the digits 0, 1, 5, 8 and 9. A136874

Numbers k such that k and k² use only the digits 0, 1, 8 and 9. A136881