Properties of the Number 9147

Nine Thousand One Hundred Forty-Seven

Basics

Value: 9146 → 9147 → 9148

Parity: odd

Prime: No

Previous Prime: 9137

Next Prime: 9151

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 3049

Divisors: 1, 3, 3049, 9147

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001110111011

Octal: 21673

Duodecimal: 5363

Hexadecimal: 23bb

Square: 83667609

Square Root: 95.63994981178107

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

Indices of squares (of primes) in the semiprimes. A128301

Sum of the sixth largest parts in the partitions of n into 7 parts. A308928

a(n) = ∑_i=0..n digsum₅(i)⁴, where digsum₅(i) = A053824(i). A231671

Triangle T(n, k) read by rows giving number of non-equivalent ways to choose k points in an equilateral triangle grid of side n. A231655

Sum of first n primes of form 4k-1. A38347

Integers n > 7059 such that the 'Reverse and Add!' trajectory of n joins the trajectory of 7059. A63058

a(n) = n-1 for n <= 2; thereafter a(n) = A238824(n-2) + A238832(n-1). A238833

Number of primitive (aperiodic) reversible strings with n beads using exactly three different colors. A56319

The number of NE partitions of n (see Comments). A239329

Number of (n+2) X (6+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 0 3 5 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 0 3 5 6 or 7. A252252