Properties of the Number 39988

Thirty-Nine Thousand Nine Hundred Eighty-Eight

Basics

Value: 39987 → 39988 → 39989

Parity: even

Prime: No

Previous Prime: 39983

Next Prime: 39989

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 13 × 769

Divisors: 1, 2, 4, 13, 26, 52, 769, 1538, 3076, 9997

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000110100

Octal: 116064

Duodecimal: 1B184

Hexadecimal: 9c34

Square: 1599040144

Square Root: 199.96999774966244

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

Number of polygons formed when every pair of vertices of a regular n-gon are joined by an infinite line. A344857

a(n) = 4*(10ⁿ-3). A177108

A344857(2·n). A347320

a(n) = smallest multiple of 4 with sum of digits = n. A77489

Primitive integer length of the side of an origin-centered square that contains inside its boundary a point with integer coordinates that is an integer distance from three of the four corners. A215365

Rectangular array T(n,k) = number of nondecreasing sequences of n 1..k integers with no element dividing the sequence sum (for n, k >= 1), read by decreasing antidiagonals. A212868

k th digit of a(n) is the number of different digits within 1 of k (not including k). A39988