Properties of the Number 9775

Nine Thousand Seven Hundred Seventy-Five

Basics

Value: 9774 → 9775 → 9776

Parity: odd

Prime: No

Previous Prime: 9769

Next Prime: 9781

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 ² × 17 × 23

Divisors: 1, 5, 17, 23, 25, 85, 115, 391, 425, 575

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000101111

Octal: 23057

Duodecimal: 57A7

Hexadecimal: 262f

Square: 95550625

Square Root: 98.86859966642594

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

Tetranacci numbers with different initial conditions: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) starting with a(0)=4, a(1)=1, a(2)=3, a(3)=7. A73817

Tetranacci numbers A073817 without the leading term 4. A1648

a(n) = (2·n-1)*(5·n²-5·n+2)/2. A63495

T(n,k)=Number of nXk 0..2 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..2 introduced in row major order. A241370

Numbers that occur only once in A155043; positions of zeros in A262505, ones in A262507. A262508

10·n analog to Keith numbers. A282765

T(n,k)=Number of nXk (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X(k+1) binary array. A226717

Odd interprimes divisible by 17. A124620

Odd composite integers m such that A003501(m-J(m,21)) == 2 (mod m) and gcd(m,21)=1, where J(m,21) is the Jacobi symbol. A339130

S₁₁ sequence in partition of integers > 1 described in A240521. A241024

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