Properties of the Number 394

Three Hundred Ninety-Four

Basics

Value: 393 → 394 → 395

Parity: even

Prime: No

Previous Prime: 389

Next Prime: 397

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 197

Divisors: 1, 2, 197, 394

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001010

Octal: 612

Duodecimal: 28A

Hexadecimal: 18a

Square: 155236

Square Root: 19.849433241279208

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

Large Schröder numbers (or large Schroeder numbers, or big Schroeder numbers). A6318

The primes doubled; even semiprimes. A100484

Number of points on surface of tetrahedron; coordination sequence for sodalite net (equals 2·n²+2 for n > 0). A5893

Positive integers which apparently never result in a palindrome under repeated applications of the function A056964(x) = x + (x with digits reversed). A23108

Infinite sequence starting with a(0)=0 such that A049820(a(k)) = a(k-1) for all k>=1, where A049820(n) = n - (number of divisors of n). A259934

Record gaps between primes. A5250

Number of integer partitions of n whose distinct parts are connected. A304716

Numbers k with A033676(k)=2, where A033676 is the largest divisor <= sqrt(k). A161344

Partial sums of A299274. A299275

Number of partitions of n into odd parts greater than 1. A87897