845804347 has 2 divisors, whose sum is σ = 845804348. Its totient is φ = 845804346.

The previous prime is 845804317. The next prime is 845804387. The reversal of 845804347 is 743408548.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-845804347 is a prime.

It is not a weakly prime, because it can be changed into another prime (845804317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422902173 + 422902174.

It is an arithmetic number, because the mean of its divisors is an integer number (422902174).

Almost surely, 2^845804347 is an apocalyptic number.

845804347 is a deficient number, since it is larger than the sum of its proper divisors (1).

845804347 is an equidigital number, since it uses as much as digits as its factorization.

845804347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 430080, while the sum is 43.

The square root of 845804347 is about 29082.7156056652. The cubic root of 845804347 is about 945.7070740005.

The spelling of 845804347 in words is "eight hundred forty-five million, eight hundred four thousand, three hundred forty-seven".