Properties of the Number 41409

Forty-One Thousand Four Hundred Nine

Basics

Value: 41408 → 41409 → 41410

Parity: odd

Prime: No

Previous Prime: 41399

Next Prime: 41411

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 43 × 107

Divisors: 1, 3, 9, 43, 107, 129, 321, 387, 963, 4601

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1010000111000001

Octal: 120701

Duodecimal: 1BB69

Hexadecimal: a1c1

Square: 1714705281

Square Root: 203.49201458533943

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

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + 2, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4. A293765

Numbers k such that 10⁹⁹⁹ + k is a (titanic) prime. A74282

Indices where A092243 strictly changes sign. A269737

Heptagonal numbers for which the sum of the digits is also a heptagonal number. A117650

Number of difference sets of subsets of {1,2,...,n}, i.e., the size of {D(A) : A subset [n] }, where D(A)={a_i-a_j : a_i>a_j and a_i,a_j in A}. A67247

Number of maximum matchings in the n X n rook complement graph. A292198

Denominators of continued fraction convergents to sqrt(219). A41409

L-th order palindromes with L > 2. A89381