Properties of the Number -1449

Four Hundred Forty-Nine

Basics

Value: -1450 → -1449 → -1448

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 23

Divisors: 1, 3, 7, 9, 21, 23, 63, 69, 161, 207

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10110101001

Octal: -2651

Duodecimal: -A09

Hexadecimal: -5a9

Square: 2099601

Square Root: 38.06573262134856

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

G.f. satisfies: A(x) = 1/(1 + x·A(x⁸)) and also the continued fraction: 1 + x·A(x⁹) = [1; 1/x, 1/x⁸, 1/x⁶⁴, 1/x⁵¹², ..., 1/x^{8^(n-1}), ...]. A101918

Triangle read by rows, numerators of coefficients (in rising powers) of rational polynomials P(n, x) such that Integral_x=0..1 P'(n, x) = Bernoulli(n, 1). A290694

Triangle of polynomial coefficients of the polynomial factors defined in A074051. A197184

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 459", based on the 5-celled von Neumann neighborhood. A272290

A triangle of polynomial coefficients:p(x,n)=Sum[(2·k - 1)ⁿ*Binomial[x, k], {k, 0, Infinity}]/2^x. A176669

Stella octangula numbers: a(n) = n*(2·n² - 1). A7588

Multiples of 9 containing a 9 in their decimal representation. A121029

Total number of ON cells at stage n of two-dimensional cellular automaton defined by "Rule 750" using the von Neumann neighborhood. A169707

Triangle read by rows: T(n,k) is the number of permutations of 2 indistinguishable copies of 1..n with exactly k local maxima. A334774

a(n) = 3·n² + 6·n. A67725