Properties of the Number -4390

Three Hundred Ninety

Basics

Value: -4391 → -4390 → -4389

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 439

Divisors: 1, 2, 5, 10, 439, 878, 2195, 4390

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000100100110

Octal: -10446

Duodecimal: -265A

Hexadecimal: -1126

Square: 19272100

Square Root: 66.25707509390978

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

a(n,m) =Floor[N[(-2 + Sqrt[3])ⁿ + (-2 - Sqrt[3])ⁿ]/2^m]. A117809

a(n) = 4·n² - 7·n + 4. A54567

Generalized 23-gonal (or icositrigonal) numbers: m*(21·m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303303

Generalized 25-gonal (or icosipentagonal) numbers: m*(23·m - 21)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303304

Number of ways to partition n elements into pie slices of different sizes. A32153

T(n,k) is the number of n-bead necklaces labeled with numbers -k..k allowing reversal, with sum zero. A208825

Number of face-connected components of half pyramidille cells in the half pyramidille up to translation, rotation, and reflection of the honeycomb. A385267

25-gonal numbers: a(n) = n*(23·n-21)/2. A255184

a(n) = n*(n² + 2·n - 1)/2. A127736

House numbers: a(n) = (n+1)³ + ∑_i=1..n i². A51662