8340847 has 2 divisors, whose sum is σ = 8340848. Its totient is φ = 8340846.

The previous prime is 8340841. The next prime is 8340851. The reversal of 8340847 is 7480438.

8340847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8340847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8340841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4170423 + 4170424.

It is an arithmetic number, because the mean of its divisors is an integer number (4170424).

Almost surely, 2^8340847 is an apocalyptic number.

8340847 is a deficient number, since it is larger than the sum of its proper divisors (1).

8340847 is an equidigital number, since it uses as much as digits as its factorization.

8340847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 8340847 is about 2888.0524579723. The cubic root of 8340847 is about 202.8009810663.

The spelling of 8340847 in words is "eight million, three hundred forty thousand, eight hundred forty-seven".