Properties of the Number 7409

Seven Thousand Four Hundred Nine

Basics

Value: 7408 → 7409 → 7410

Parity: odd

Prime: No

Previous Prime: 7393

Next Prime: 7411

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 31 × 239

Divisors: 1, 31, 239, 7409

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110011110001

Octal: 16361

Duodecimal: 4355

Hexadecimal: 1cf1

Square: 54893281

Square Root: 86.07554821202127

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 partitions of n with unimodal run-lengths. A332280

Palindromic numbers in bases 6 and 8 written in base 10. A259384

Expansion of ψ(x²) / f(-x) in powers of·where ψ(), f() are Ramanujan θ functions. A98613

Number of integer compositions of n where adjacent parts are indivisible (either way) and the last and first part are also indivisible (either way). A318727

Numerators of the Inverse Akiyama-Tanigawa transform of the aerated even-indexed Bernoulli numbers 1, 0, 1/6, 0, -1/30, 0, 1/42, ... A177427

Average of terms of n-th row of A077321. A77325

a(n) = a(n-1) + 2·a(n-2) + a(n-3) - a(n-4). A101400

Iterates of A234742, starting from value a(0) = 29, with a(1) = A234742(a(0)), a(2) = A234742(a(1)), etc. A260729

The number of seconds after midnight (3600·H + 60·MM + SS) corresponding to prime time numbers A295014, i.e., numbers of the form HMMSS with primes H < 24 and MM, SS < 60. A295004

Conjectured lower bound for the number of spheres of radius 1 that can be packed in a sphere of radius n. A121346