Properties of the Number -9785

Seven Hundred Eighty-Five

Basics

Value: -9786 → -9785 → -9784

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 × 19 × 103

Divisors: 1, 5, 19, 95, 103, 515, 1957, 9785

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011000111001

Octal: -23071

Duodecimal: -57B5

Hexadecimal: -2639

Square: 95746225

Square Root: 98.91915891272023

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

Expansion of r(q)⁵ / r(q⁵) in powers of q where r() is the Rogers-Ramanujan continued fraction. A285630

E.g.f. A(x) satisfies A'(x) = 1 + A(2 * (1 - exp(-x)))/2. A355217

Shifts 2 places left when binomial transform is applied twice with a(0) = a(1) = 1. A7472

-7-Knödel numbers. A225511

a(n) = (n/3 + 7/9)*2^{n - 1} + (-1)ⁿ/9. A127984

T(n,k)=Majority value maps: number of nXk binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nXk array. A220313

The limiting sequence [A259095(r(r+1)/2-s,r), s=0,1,2,...,r-1] for very large r. A5576

Maxima of the rows of the triangle A259095. A5577

T(n,k)=Majority value maps: number of nXk binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nXk array. A220369

a(n) = ∑_k=3..n binomial(k-1,2) * floor(n/k). A366970