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Properties of the Number 3946

Three Thousand Nine Hundred Forty-Six

Basics

Value: 3945 → 3946 → 3947

Parity: even

Prime: No

Previous Prime: 3943

Next Prime: 3947

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 1973

Divisors: 1, 2, 1973, 3946

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 111101101010

Octal: 7552

Duodecimal: 234A

Hexadecimal: f6a

Square: 15570916

Square Root: 62.81719509815764

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

Partial sums of A299287. A299288
Array read by antidiagonals: T(n,k) = number of nonequivalent dissections of a polygon into n k-gons by nonintersecting diagonals up to rotation and reflection (k >= 3). A295260
Number of planar hexagon trees with n hexagons. A4127
a(n) = ∑k=1..n floor(n/k) * 5k-1. A344816
Numbers that have 8 terms in their Zeckendorf representation. A179248
Compound filter: a(n) = T(A032742(n), A046523(n)), where T(n,k) is sequence A000027 used as a pairing function. A285729
a(n) = ∑k=0..n binomial(n,k)3 * 3k. A206180
a(0)=a(1)=1, a(n)=a(n-2)+(n+1)*a(n-1). A58279
Maximum number of regions defined by n zigzag-lines in the plane when a zigzag-line is defined as consisting of two parallel infinite half-lines joined by a straight line segment. A117625
Square array A(n,k), n >= 1, k >= 0, read by antidiagonals downwards, where A(n,k) = ∑j=1..n floor(n/j) * kj-1. A344821