Properties of the Number 39905

Thirty-Nine Thousand Nine Hundred Five

Basics

Value: 39904 → 39905 → 39906

Parity: odd

Prime: No

Previous Prime: 39901

Next Prime: 39929

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 × 23 × 347

Divisors: 1, 5, 23, 115, 347, 1735, 7981, 39905

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001101111100001

Octal: 115741

Duodecimal: 1B115

Hexadecimal: 9be1

Square: 1592409025

Square Root: 199.76235881666997

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

T(n,k) = Unmatched value maps: number of nXk binary arrays indicating the locations of corresponding elements not equal to any horizontal, vertical or antidiagonal neighbor in a random 0..1 nXk array. A219741

Unmatched value maps: number of n X 4 binary arrays indicating the locations of corresponding elements not equal to any horizontal, vertical or antidiagonal neighbor in a random 0..1 n X 4 array. A219737

Unmatched value maps: number of nX7 binary arrays indicating the locations of corresponding elements not equal to any horizontal, vertical or antidiagonal neighbor in a random 0..1 nX7 array. A219740

Number of length n arrays of permutations of 0..n-1 with each element moved by -4 to 4 places and with no two consecutive decreases. A263679

Sum of primes between 100·n and 100·n + 99. A276355

Zeisel numbers with p(0)=4. A200525

Number A(n,k) of tilings of a k X n rectangle using 1 X 1 squares and L-tiles; square array A(n,k), n>=0, k>=0, read by antidiagonals. A226444

T(n,k)=Number of length n arrays of permutations of 0..n-1 with each element moved by -k to k places and with no two consecutive decreases. A263683

Number of partitions with at most one part divisible by 5. A39905