Properties of the Number -4491

Four Hundred Ninety-One

Basics

Value: -4492 → -4491 → -4490

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 499

Divisors: 1, 3, 9, 499, 1497, 4491

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000110001011

Octal: -10613

Duodecimal: -2723

Hexadecimal: -118b

Square: 20169081

Square Root: 67.01492371106603

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

Diagonal sums of number triangle A185962. A185964

Number of non-isomorphic hypertrees of weight n. A304867

Number of integer partitions of n with different mean, median, and mode. A363720

Starting from generation 8 add previous and next term yielding generation 9. A48455

a(1) = 9; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A74345

Smaller of two consecutive numbers of the form p²*q where p and q are distinct primes. A74172

a(n) = a(n-1) + a(m) for n >= 4, where m = 2^p+1 + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = a(2) = 1 and a(3) = 3. A50033

Positive numbers whose product of digits is 8 times their sum. A62040

Numbers n such that A003313(n) = A003313(2n). A86878

T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A302728