853905 has 32 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 403200.

The previous prime is 853903. The next prime is 853913. The reversal of 853905 is 509358.

It is not a de Polignac number, because 853905 - 2¹ = 853903 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (853901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5580 + ... + 5730.

It is an arithmetic number, because the mean of its divisors is an integer number (47880).

2⁸⁵³⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

853905 is a deficient number, since it is larger than the sum of its proper divisors (678255).

853905 is a wasteful number, since it uses less digits than its factorization.

853905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 853905 is about 924.0698025582. The cubic root of 853905 is about 94.8716641973.

The spelling of 853905 in words is "eight hundred fifty-three thousand, nine hundred five".