845849 has 2 divisors, whose sum is σ = 845850. Its totient is φ = 845848.

The previous prime is 845833. The next prime is 845863. The reversal of 845849 is 948548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797449 + 48400 = 893^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 845849 - 2⁴ = 845833 is a prime.

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 845849.

It is not a weakly prime, because it can be changed into another prime (845809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422924 + 422925.

It is an arithmetic number, because the mean of its divisors is an integer number (422925).

2⁸⁴⁵⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

845849 is a deficient number, since it is larger than the sum of its proper divisors (1).

845849 is an equidigital number, since it uses as much as digits as its factorization.

845849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 38.

The square root of 845849 is about 919.7004947264. The cubic root of 845849 is about 94.5723716114.

The spelling of 845849 in words is "eight hundred forty-five thousand, eight hundred forty-nine".