Properties of the Number -2709

Seven Hundred Nine

Basics

Value: -2710 → -2709 → -2708

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 43

Divisors: 1, 3, 7, 9, 21, 43, 63, 129, 301, 387

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101010010101

Octal: -5225

Duodecimal: -1699

Hexadecimal: -a95

Square: 7338681

Square Root: 52.04805471869242

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

Triangular matchstick numbers: a(n) = 3·n*(n+1)/2. A45943

Numbers k such that k divides 4^k - 1. A14945

Numbers k such that k | 5^k + 1. A15951

Square array read by antidiagonals in which T(n,k) is the n-th number j with the property that the symmetric representation of σ(j) has k parts, with j >= 1, n >= 1, k >= 1. A240062

a(n) = n*(n+20). A120071

a(n) = 90·n - 81. A139280

Convolution triangle of A000129(n) (Pell numbers). A54456

Numbers that are palindromic in bases 2 and 5. A182232

Palindromic numbers in bases 2 and 8 written in base 10. A259380

a(1) = 1; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A74336