Properties of the Number 39788

Thirty-Nine Thousand Seven Hundred Eighty-Eight

Basics

Value: 39787 → 39788 → 39789

Parity: even

Prime: No

Previous Prime: 39779

Next Prime: 39791

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 7 ³ × 29

Divisors: 1, 2, 4, 7, 14, 28, 29, 49, 58, 98

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101101101100

Octal: 115554

Duodecimal: 1B038

Hexadecimal: 9b6c

Square: 1583084944

Square Root: 199.4692958828501

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

a(n) = n-1 for n <= 4, otherwise if n is even then a(n) = a(n-5)+2^n/2, and if n is odd then a(n) = a(n-1)+2^(n-3/2). A200310

A nonlinear recurrence. A3073

a(n) = n * [1 + sum(k=1 to n-1) prime(k)]. A83719

a(3n) = floor(43·2ⁿ/28) - 1, a(3n+1) = a(3n) + 3·2^n-3, a(3n+2) = floor(17·2ⁿ/7 - 6/7) for n>=3. A123946

a(n) = 1·4*7 + 4·7*10 + 7·10·13 + ... (n terms). A196513

Numbers k such that φ(k) is equal to the product of (the sum of prime factors and the sum of exponents) of k. A39788