Properties of the Number -89800

Eighty-Nine Thousand Eight Hundred

Basics

Value: -89801 → -89800 → -89799

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 5 ² × 449

Divisors: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -10101111011001000

Octal: -257310

Duodecimal: -43B74

Hexadecimal: -15ec8

Square: 8064040000

Square Root: 299.66648127543397

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

Number of partitions of n such that (number parts having multiplicity 1) is a part or (number of parts > 1) is a part. A241515

G.f. A(x) satisfies A(x) = 1 / (1 - x - x·A(x⁵)). A367661

First occurrence of n in A084511. A84517

Triangle T(n,k) = total of number at last index for all set partitions of n into k parts. A120095

Place two n-gons with radii 1 and 2 concentrically, forming an annular area between them. Connect all the vertices with line segments that lie entirely within that area. Then a(n) is the number of regions in that figure. A337700

G.f.: ∑_n>=0 (n+1)*(n+2)*(n+3)/3! * (x + xⁿ)ⁿ. A325999

Numbers n such that every digit of both n and n² contains a loop (only digits 0,4,6,8,9 in n and n²). A107626

p-INVERT of (1,0,1,0,0,0,0,...), where p(S) = 1 - S - S⁴. A291738

Numbers k such that k and k² use only the digits 0, 4, 6, 8 and 9. A136956

Numbers k such that 8·10^k + 81 is prime. A287680