Properties of the Number 3947

Three Thousand Nine Hundred Forty-Seven

Basics

Value: 3946 → 3947 → 3948

Parity: odd

Prime: Yes

Previous Prime: 3943

Next Prime: 3967

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 3947

Divisors: 1, 3947

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101101011

Octal: 7553

Duodecimal: 234B

Hexadecimal: f6b

Square: 15578809

Square Root: 62.82515419798029

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 that become another prime under the map 8 <-> 9 (acting on the decimal digits). A175789

Number of integer partitions of n that can be partitioned into sets with distinct sums. A381992

Safe primes (A005385) that are not Sophie Germain primes. A59452

Lower prime of a difference of 20 between consecutive primes. A31938

Popular primes. A385503

Primes congruent to 8 mod 13. A92178

Numbers that have 8 terms in their Zeckendorf representation. A179248

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 1 0 vertically. A207488

Father primes of order 3. A136072

Coefficients of a Ramanujan q-series. A143184