Properties of the Number -88887

Eighty-Eight Thousand Eight Hundred Eighty-Seven

Basics

Value: -88888 → -88887 → -88886

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 39

Digital Root: 3

Palindrome: No

Factorization: 3 × 29629

Divisors: 1, 3, 29629, 88887

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -10101101100110111

Octal: -255467

Duodecimal: -43533

Hexadecimal: -15b37

Square: 7900898769

Square Root: 298.1392292201749

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

For k in {2,3,...,9} define a sequence as follows: a(0)=0; for n>=0, a(n+1)=a(n)+1, unless a(n) ends in k, in which case a(n+1) is obtained by replacing the last digit of a(n) with the digit(s) of k². This is k(9). A237346

Smallest semiprime containing exactly n 8's. A104761

a(n) = (8·10ⁿ - 17)/9 for n > 0. A173812

Numbers k such that k and k² use only the digits 0, 6, 7, 8 and 9. A136966

Near-repdigit semiprimes with 8 as repeated digit. A105989

Consider a decimal number of k>=2 digits z = d_k*10^k-1 + d_k-1*10^k-2 + ... + d₂*10 + d₁ and the sum y = ∑_x=2..k {∑_j=1..k-x{d_j+x-1*10^j-1} - ∑_j=1..x-1{d_j*10^j-1}}. Sequence lists the numbers for which y = τ(z), where τ(z) is the number of divisors of z. A248904