84347 has 2 divisors, whose sum is σ = 84348.
Its totient is φ = 84346.
The previous prime is 84319. The next prime is 84349. The reversal of 84347 is 74348.
Subtracting from 84347 its reverse (74348), we obtain a palindrome (9999).
It can be divided in two parts, 843 and 47, that multiplied together give a triangular number (39621 = T281).
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 84347 - 212 = 80251 is a prime.
It is a super-2 number, since 2×843472 = 14228832818, which contains 22 as substring.
Together with 84349, it forms a pair of twin primes.
It is a Chen prime.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 84347.
It is not a weakly prime, because it can be changed into another prime (84349) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42173 + 42174.
It is an arithmetic number, because the mean of its divisors is an integer number (42174).
284347 is an apocalyptic number.
84347 is a deficient number, since it is larger than the sum of its proper divisors (1).
84347 is an equidigital number, since it uses as much as digits as its factorization.
84347 is an evil number, because the sum of its binary digits is even.
The product of its digits is 2688, while the sum is 26.
The square root of 84347 is about 290.4255498402.
The cubic root of 84347 is about 43.8554138329.
The spelling of 84347 in words is "eighty-four thousand, three hundred forty-seven".