845387 has 2 divisors, whose sum is σ = 845388. Its totient is φ = 845386.

The previous prime is 845381. The next prime is 845431. The reversal of 845387 is 783548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 845387 - 2⁴ = 845371 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 845387.

It is not a weakly prime, because it can be changed into another prime (845381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422693 + 422694.

It is an arithmetic number, because the mean of its divisors is an integer number (422694).

2⁸⁴⁵³⁸⁷ is an apocalyptic number.

845387 is a deficient number, since it is larger than the sum of its proper divisors (1).

845387 is an equidigital number, since it uses as much as digits as its factorization.

845387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 35.

The square root of 845387 is about 919.4492916958. The cubic root of 845387 is about 94.5551501006. Note that the first 3 decimals are identical.

The spelling of 845387 in words is "eight hundred forty-five thousand, three hundred eighty-seven".