Properties of the Number 43947

Forty-Three Thousand Nine Hundred Forty-Seven

Basics

Value: 43946 → 43947 → 43948

Parity: odd

Prime: No

Previous Prime: 43943

Next Prime: 43951

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 19 × 257

Divisors: 1, 3, 9, 19, 57, 171, 257, 771, 2313, 4883

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010101110101011

Octal: 125653

Duodecimal: 21523

Hexadecimal: abab

Square: 1931338809

Square Root: 209.63539777432626

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

a(n) = (2ⁿ+1)*(2ⁿ+2)/6. A7581

T(n,k) is the number of n X k 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors. A208408

Triangle of partial sums of Stirling numbers of 2nd kind (A008277): T(n,k) = ∑_i=1..k Stirling2(n,i), 1<=k<=n. A102661

Number of set partitions of length <= 4; sum of first 4 columns of triangle of Stirling numbers of 2nd kind; dimension of space of symmetric polynomials in 4 noncommuting variables. A124303

T(n,k)=1/256 the number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor. A183827

T(n,k)=Number of nXk 0..3 arrays with rows and columns in nondecreasing order. A184129

Number of periodic palindromic structures using a maximum of four different symbols. A56505

Number of oriented rational links with crossing number n. A329908

Number of proper T₁-hypergraphs with 3 labeled nodes and n hyperedges. A56078

Integers arising in A133677. A133645