Properties of the Number 39947

Thirty-Nine Thousand Nine Hundred Forty-Seven

Basics

Value: 39946 → 39947 → 39948

Parity: odd

Prime: No

Previous Prime: 39937

Next Prime: 39953

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 43 × 929

Divisors: 1, 43, 929, 39947

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000001011

Octal: 116013

Duodecimal: 1B14B

Hexadecimal: 9c0b

Square: 1595762809

Square Root: 199.86745608027337

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

G.f.: ∑_k>=1 x^2·k/(1+x^2·k) * ∏_k>=1 1/(1-x^k). A305121

Smallest sets of 6 consecutive deficient numbers in arithmetic progression. The initial deficient number is listed. A231628

Absolute discriminants of imaginary quadratic number fields with elementary bicyclic 5-class group (5,5). A359871

Number of crossing normal multiset partitions of weight n. A326277

a(1) = 1; a(n) = a(n-1) + 2·a(floor(n/2)). A347027

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (composite numbers), t = (primes). A24604

G.f. satisfies: A(x - A(x) + A(x)²) = x⁴. A291190

Factors k > 2 such that the polynomial x² + k·x + 1 produces a new minimum of its Hardy-Littlewood constant. A332707

Erroneous version of A039952. A39947