Properties of the Number 84419

Eighty-Four Thousand Four Hundred Nineteen

Basics

Value: 84418 → 84419 → 84420

Parity: odd

Prime: No

Previous Prime: 84407

Next Prime: 84421

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 29 × 41 × 71

Divisors: 1, 29, 41, 71, 1189, 2059, 2911, 84419

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100100111000011

Octal: 244703

Duodecimal: 40A2B

Hexadecimal: 149c3

Square: 7126567561

Square Root: 290.54947943508694

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

Composite numbers k that divide Fibonacci(k+1). A69107

Numbers k that divide Fibonacci(k+1) but do not divide Fibonacci(k) + 1. A94412

Chebyshev pseudoprimes to both base 2 and base 3: composite numbers k such that T(k, 2) == 2 (mod k) and T(k, 3) == 3 (mod k), where T(k, x) is the k-th Chebyshev polynomial of the first kind. A330208

Composite numbers for which the root mean square of proper divisors is an integer. A247135

Composite squarefree numbers k such that k²-1 is divisible by p-1 and p+1, where p are all the prime factors of k. A306685

Composite numbers k that divide both Fibonacci(k+1) and Fibonacci(2k+1)-1. A182504

Composite squarefree numbers k such that for any prime p dividing k both (p-1)/2 and (p+1)/2 divide k+1. A392557

a(n) = number of primes that can be formed by adding 1 to the product of any subset of the divisors of n. A84419