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Properties of the Number -1839

Eight Hundred Thirty-Nine

Basics

Value: -1840 → -1839 → -1838

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 613

Divisors: 1, 3, 613, 1839

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -11100101111

Octal: -3457

Duodecimal: -1093

Hexadecimal: -72f

Square: 3381921

Square Root: 42.883563284783136

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

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 505", based on the 5-celled von Neumann neighborhood. A272584
Expansion of (1 + x + x2)/(1 - x3 + x4). A124750
First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 457", based on the 5-celled von Neumann neighborhood. A272283
First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 507", based on the 5-celled von Neumann neighborhood. A272588
Composite and every divisor (except 1) contains the digit 3. A62668
Values of n such that n2-2 and n2+2 are both prime. A108701
a(1) = 2; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A33679
Numbers n such that the decimal expansions of both n and n2 have 1 as smallest digit and 9 as largest digit. A256601
Analog of A121805, but starting with 4. A366492
Number of connected components of n faces of the snub cube up to the 24 rotations of the snub cube. A384072