Properties of the Number 849

Eight Hundred Forty-Nine

Basics

Value: 848 → 849 → 850

Parity: odd

Prime: No

Previous Prime: 839

Next Prime: 853

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 283

Divisors: 1, 3, 283, 849

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1101010001

Octal: 1521

Duodecimal: 5A9

Hexadecimal: 351

Square: 720801

Square Root: 29.13760456866693

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 partitions of n into pairwise relatively prime parts. A51424

Coordination sequence T1 for Zeolite Code LTA and ρ. A8137

Numbers obtained by reinterpreting base-2 representation of n in the factorial base: a(n) = ∑_k>=0 A030308(n,k)*A000142(k+1). A59590

Average of twin prime pairs (A014574), divided by 2. Equivalently, 2·a(n)-1 and 2·a(n)+1 are primes. A40040

Numbers that are the sum of 4 nonzero 4th powers. A3338

a(0) = 0. For n > 0, smallest non-palindromic number k such that the smallest palindrome in the Reverse and Add! trajectory of k is reached after exactly n iterations. A23109

Lunar primes (formerly called dismal primes) (cf. A087062). A87097

Coordination sequence of Dual(3.12.12) tiling with respect to a trivalent node. A298035

Expansion of 1/(1 - x⁵ - x⁶ - x⁷ - x⁸ + x¹³). A173924

Powers of cube root of 18 rounded to nearest integer. A18028