Properties of the Number 3809

Three Thousand Eight Hundred Nine

Basics

Value: 3808 → 3809 → 3810

Parity: odd

Prime: No

Previous Prime: 3803

Next Prime: 3821

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 13 × 293

Divisors: 1, 13, 293, 3809

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111011100001

Octal: 7341

Duodecimal: 2255

Hexadecimal: ee1

Square: 14508481

Square Root: 61.71709649683789

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 x * (1 - x) / (1 - 16·x + x²). A157456

Triangle read by rows: T(n,k) = number of noncommutative symmetric polynomials of degree n that have exactly k different variables appearing in each monomial and which generate the algebra of all noncommutative symmetric polynomials (n >= 1, 1 <= k <= n). A55105

Concentric 14-gonal numbers. A195145

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero. A232076

Triangle T(k,n) giving number of symmetric polynomials of degree n in k noncommuting variables, n >=2, 2 <= k <= n. A55107

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302224

Half the number of nX2 binary arrays with each element equal to at least one neighbor. A180762

T(n,k) = half the number of n X k binary arrays with each element equal to at least one neighbor. A180771

T(n,k)=Number of nXk 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order. A240783

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302381