Properties of the Number 39402

Thirty-Nine Thousand Four Hundred Two

Basics

Value: 39401 → 39402 → 39403

Parity: even

Prime: No

Previous Prime: 39397

Next Prime: 39409

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 11 × 199

Divisors: 1, 2, 3, 6, 9, 11, 18, 22, 33, 66

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001100111101010

Octal: 114752

Duodecimal: 1A976

Hexadecimal: 99ea

Square: 1552517604

Square Root: 198.49937027607922

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

Product of a prime and the previous number. A36689

Inflation orbit counts. A31367

Non-palindromic numbers n such that φ(n) = φ(reversal(n)). A97647

Numbers m such that gcd(A001008(m), m) > 1, in increasing order. A256102

Trajectory of 397 under the map A340008: n -> n/2 if n is even, n-> n² - 1 if n is an odd prime, otherwise n -> n - 1. A340419

a(n) = (p+2)!/p! where p is the n-th lesser twin prime, A001359(n). A126251

a(n) is the least exponent k such that 3^k-1 is divisible by prime(n)², or -1 if no such k exists. A283620

Record values in A377059. A378029

Semiperimeter of the unique primitive Pythagorean triple whose inradius is the n-th odd prime and whose short leg is an even number. A380301

Least positive integer k such that prime(prime(prime(k)))+ prime(prime(prime(k·n))) = 2·prime(prime(p)) for some prime p. A261583