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Properties of the Number 40199

Forty Thousand One Hundred Ninety-Nine

Basics

Value: 40198 → 40199 → 40200

Parity: odd

Prime: No

Previous Prime: 40193

Next Prime: 40213

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 61 × 659

Divisors: 1, 61, 659, 40199

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1001110100000111

Octal: 116407

Duodecimal: 1B31B

Hexadecimal: 9d07

Square: 1615959601

Square Root: 200.4968827687852

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

T(n,k) = Number of (n+1) X (k+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2 X 2 subblock equal. A236884
Triangle of numerators for rational convergents to Taylor series of 1/γ(x+1). A386675
Number of permutations of 1..n with displacements restricted to {-4,-3,0,1,2}. A189581
Numbers n such that σ (φ ( n ) ) = σ (σ (n ) ) where φ is Euler's totient and σ is the multiplicative sum-of-divisors function. A65556
Number of (n+1) X (3+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2 X 2 subblock equal. A236879
Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal. A236880
Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite STI = Stilbite Na4Ca8[Al20Si52O144].56H2O starting with a T1 atom. A19241
A(n, k) is the k-th number b > 1 such that bprime(n+i-1) == 1 (mod prime(n+i)2) for each i = 0..3, with k running over the positive integers; square array, read by antidiagonals, downwards. A319061
Continued fraction for sqrt(214). A40199