Properties of the Number -9999990

Nine Hundred Ninety-Nine Thousand Nine Hundred Ninety

Basics

Value: -9999991 → -9999990 → -9999989

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 54

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 5 × 7 × 11 × 13 × 37

Divisors: 1, 2, 3, 5, 6, 7, 9, 10, 11, 13

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7989 Try Today's Challenge

Representations

Binary: -100110001001011001110110

Octal: -46113166

Duodecimal: -3423046

Hexadecimal: -989676

Square: 99999800000100

Square Root: 3162.276079029154

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) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 99. A93299

a(n) = n⁷ - n. A133499

Largest n-digit number with exactly n distinct prime divisors. There are no further terms. A70843

Number of 10-ary sequences with primitive period n. A218127

a(n) is the least positive integer in base 10 containing n nines that is divisible by n. A112909

a(n) = 10*(10ⁿ-1). A124167

a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 91. A93291