Properties of the Number 449

Four Hundred Forty-Nine

Basics

Value: 448 → 449 → 450

Parity: odd

Prime: Yes

Previous Prime: 443

Next Prime: 457

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 449

Divisors: 1, 449

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000001

Octal: 701

Duodecimal: 315

Hexadecimal: 1c1

Square: 201601

Square Root: 21.18962010041709

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

Pythagorean primes: primes of the form 4·k + 1. A2144

Numbers k such that (7·10^k + 71)/3 is prime. A270831

Primes congruent to 1 or 2 modulo 4; or, primes of form x² + y²; or, -1 is a square mod p. A2313

Primes of the form 3n-1. A3627

Primes of the form 6k-1. A7528

Indices of prime Fibonacci numbers. A1605

Number of ordered triples (w,x,y) with all terms in {-n,...,0,...,n} and w² + x·y = 0. A211422

Primes of form 8n+1, that is, primes congruent to 1 mod 8. A7519

Single (or isolated or non-twin) primes: Primes p such that neither p-2 nor p+2 is prime. A7510

a(n) = 2·n² - 1. A56220