Properties of the Number -109989

One Hundred Nine Thousand Nine Hundred Eighty-Nine

Basics

Value: -109990 → -109989 → -109988

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11 ² × 101

Divisors: 1, 3, 9, 11, 33, 99, 101, 121, 303, 363

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11010110110100101

Octal: -326645

Duodecimal: -53799

Hexadecimal: -1ada5

Square: 12097580121

Square Root: 331.6458954969894

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

Numbers k such that 9·k = (k written backwards), k > 0. A1232

Numbers k such that k written backwards is a nontrivial multiple of k. A8919

Numbers k such that k and 9·k are anagrams. A23093

Non-palindromes in A110751; that is, non-palindromic numbers n such that n and R(n) have the same prime divisors, where R(n) = digit reversal of n. A110819

1/3-Smith numbers. A50225

Repunits with even indices multiplied by 99, i.e., 99*(11, 1111, 111111, 11111111, ...). A274755

Non-palindromic numbers n, not divisible by 10, such that either n divides R(n) or R(n) divides n, where R(n) is the digit-reversal of n. A71685

Non-palindromic numbers such that either x=q1.Rev[x] or Rev[x]=q2.x, where R[x]=A004086[x] and q1 or q2 are integers not divisible by 10. A71687

Erroneous version of A001232. A39684

Numbers k such that gcd(k², reverse(k²)) = k. A175823