Properties of the Number 8041

Eight Thousand Forty-One

Basics

Value: 8040 → 8041 → 8042

Parity: odd

Prime: No

Previous Prime: 8039

Next Prime: 8053

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 11 × 17 × 43

Divisors: 1, 11, 17, 43, 187, 473, 731, 8041

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1111101101001

Octal: 17551

Duodecimal: 47A1

Hexadecimal: 1f69

Square: 64657681

Square Root: 89.67162315916892

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

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s. A297720

Numbers which are the roots of distinct not-previously-encountered side-trees ("tendrils") sprouting from the side of the infinite beanstalk (see A213730). A218612

Least positive integer m with π(m·n) = φ(m+n), where π(.) is the prime-counting function and φ(.) is Euler's totient function. A247602

Take the list t(n,0) = {1,...,n}; denote by t(n,j) this list after rotating to left (or right) by j positions. Calculate inner product of t(n,0) and t(n,j) and denote the value by s(n,j). Compute this inner product for all j = 1..n and choose the smallest. This is a(n). A88003

Iccanobirt numbers (8 of 15): a(n) = R(a(n-1) + a(n-2) + a(n-3)), where R is the digit reversal function A004086. A102118

Row sums of triangle A135858. A135859

Numbers for which the harmonic mean of nontrivial divisors is an integer. A247078

Number of Aut(G)-orbits on G-characters that come from Riemann surfaces of genus n. A347373

Number of partitions of n that do not contain 4 as a part. A27338

Molien series for invariants of finite Coxeter group A₈. A266777