Properties of the Number 9876

Nine Thousand Eight Hundred Seventy-Six

Basics

Value: 9875 → 9876 → 9877

Parity: even

Prime: No

Previous Prime: 9871

Next Prime: 9883

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 823

Divisors: 1, 2, 3, 4, 6, 12, 823, 1646, 2469, 3292

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011010010100

Octal: 23224

Duodecimal: 5870

Hexadecimal: 2694

Square: 97535376

Square Root: 99.37806599043876

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 Bernoulli number B_k has denominator 2730. A249134

A triangle formed like generalized Pascal's triangle. The rule is T(n,k) = 2·T(n-1,k-1) + T(n-1,k), the left border is n and the right border is n² instead of 1. A228576

Array T(n,k) read by antidiagonals: T(n,k) is the number of [n,k]-triangulations in the plane, n >= 0, k >= 0. A169808

Number of times the digit 2 appears in the first 10ⁿ decimal digits of sqrt(2), sometimes called Pythagoras's constant, counting after the decimal point. A322643

a(n) = (10ⁿ - 1)*(80/81) + n/9. A64617

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically. A253740

G.f. A(x) satisfies: A(x)² = A(x²) + 6·x. A264412

McKay-Thompson series of class 6c for Monster. A7262

G.f. A(x) satisfies: A(x)² = x·G(x) where G(G(x)) = (1+x)²*G(x) and G(x) is the g.f. of A107095. A107096

Reverse concatenation of next n numbers with a(1) = 0. A80483