Properties of the Number -4000

Basics

Value: -4001 → -4000 → -3999

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 4

Digital Root: 4

Palindrome: No

Factorization: 2 ⁵ × 5 ³

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 25, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111110100000

Octal: -7640

Duodecimal: -2394

Hexadecimal: -fa0

Square: 16000000

Square Root: 63.245553203367585

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Inverse of A038303, and generalization of A130595. A165293

Totally multiplicative sequence with a(p) = 10*(p-3) for prime p. A167320

10-gonal (or decagonal) numbers: a(n) = n*(4·n-3). A1107

3-full (or cube-full, or cubefull) numbers: if a prime p divides n then so does p³. A36966

Numbers of the form 2ⁱ*5^j with i, j >= 0. A3592

Achilles numbers - powerful but imperfect: if n = Product(p_i^e_i) then all e_i > 1 (i.e., powerful), but the highest common factor of the e_i is 1, i.e., not a perfect power. A52486

Numbers that are divisible by exactly 8 primes counting multiplicity. A46310

Numbers whose sum of digits is 4. A52218

Numbers k such that k⁶⁴ + 1 is prime. A6316

a(n) = 10·n². A33583