Properties of the Number -99799

Ninety-Nine Thousand Seven Hundred Ninety-Nine

Basics

Value: -99800 → -99799 → -99798

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 43

Digital Root: 7

Palindrome: Yes

Factorization: 7 × 53 × 269

Divisors: 1, 7, 53, 269, 371, 1883, 14257, 99799

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -11000010111010111

Octal: -302727

Duodecimal: -49907

Hexadecimal: -185d7

Square: 9959840401

Square Root: 315.90979725231693

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) = 10²ⁿ⁺¹ - 1 - 2·10ⁿ. A332197

a(n) = smallest multiple of 7 with a digit sum = n. A77493

Expansion of g.f.: (1+x-sqrt(1-2·x-7·x²-8·x³-4·x⁴))/(2*(1+x+x²)). A108630

a(n) is the least k such that n is divisible by the sum of digits of k and k is divisible by the sum of digits of n; a(n) = -1 if no such k exists. A344487

Numbers having four 9's in base 10. A43528

Largest palindrome using minimum number of digits with a digit sum = n. A70244

a(n) is the smallest k different from n such that (n, k) is a Harshad amicable pair (see the comments). A272479