845397 has 36 divisors (see below), whose sum is σ = 1493856. Its totient is φ = 476280.

The previous prime is 845387. The next prime is 845431. The reversal of 845397 is 793548.

It is not a de Polignac number, because 845397 - 2⁴ = 845381 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845397.

It is not an unprimeable number, because it can be changed into a prime (845347) 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 in 35 ways as a sum of consecutive naturals, for example, 11872 + ... + 11942.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2⁸⁴⁵³⁹⁷ is an apocalyptic number.

It is an amenable number.

845397 is a deficient number, since it is larger than the sum of its proper divisors (648459).

845397 is an equidigital number, since it uses as much as digits as its factorization.

845397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 81 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 845397 is about 919.4547297176. The cubic root of 845397 is about 94.5555229270. Note that the first 4 decimals are identical.

The spelling of 845397 in words is "eight hundred forty-five thousand, three hundred ninety-seven".