Properties of the Number 90069

Ninety Thousand Sixty-Nine

Basics

Value: 90068 → 90069 → 90070

Parity: odd

Prime: No

Previous Prime: 90067

Next Prime: 90071

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 4289

Divisors: 1, 3, 7, 21, 4289, 12867, 30023, 90069

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111111010101

Octal: 257725

Duodecimal: 44159

Hexadecimal: 15fd5

Square: 8112424761

Square Root: 300.1149779667786

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 integer compositions of n whose leaders of strictly increasing runs are weakly increasing. A374690

INVERT transform of φ(n), A000010. A159929

Numerators of continued fraction convergents to sqrt(469). A41894

Triangle of coefficients of the polynomials x^{n - 1}*A(n,x + 1/x), where A(n,x) are the Eulerian polynomials of A008292. A143505

Central binomial coefficients: binomial(2·n,n) = (2·n)!/(n!)². A984

The Franel number a(n) = ∑_{k = 0..n} binomial(n,k)³. A172

a(n) = ∑_{k = 0..n} binomial(n,k)⁴. A5260

a(n) = ∑_d∣n φ(d)*μ(n/d). A7431

Number of inequivalent labeled Hamiltonian circuits on n-octahedron. Interlacing chords joining 2n points on circle. A3436

Number of 3-uniform hypergraphs on n unlabeled nodes, or equivalently number of relations with 3 arguments on n nodes. A665