Properties of the Number 85439

Eighty-Five Thousand Four Hundred Thirty-Nine

Basics

Value: 85438 → 85439 → 85440

Parity: odd

Prime: Yes

Previous Prime: 85429

Next Prime: 85447

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 85439

Divisors: 1, 85439

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100110110111111

Octal: 246677

Duodecimal: 4153B

Hexadecimal: 14dbf

Square: 7299822721

Square Root: 292.2995039338931

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

Primes which are a concatenation of n and prime(n). A84667

Primes p such that the concatenation of p and 29 is a square number: "p 29" = N = m². A168545

a(n) is the least prime factor of the alternating factorial n! - (n-1)! + (n-2)! - ... 1! for n > 2; a(1) = a(2) = 1. A359808

a(n) is smallest prime > 3·a(n-1), a(1) = 3. A65540

Distinct-digit primes that are the concatenation of m and prime(m) for some number m. A255596

Distinct-digit numbers that are the concatenation of m and prime(m) for some number m. A255729

Number of nX4 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero. A303686

Primes that are the sum of all primes in an interval [k,2·k] for some k>=1. A389113

Number of numbers in n-th generation of the tree of Gaussian rationals at A233696. A245264

a(n) = ∑_i=1..n binomial(i+1,2)⁴. A85439