855849 has 4 divisors (see below), whose sum is σ = 1141136. Its totient is φ = 570564.

The previous prime is 855821. The next prime is 855851. The reversal of 855849 is 948558.

855849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 855849 - 2⁷ = 855721 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142639 + ... + 142644.

It is an arithmetic number, because the mean of its divisors is an integer number (285284).

2⁸⁵⁵⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

855849 is a deficient number, since it is larger than the sum of its proper divisors (285287).

855849 is a wasteful number, since it uses less digits than its factorization.

855849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285286.

The product of its digits is 57600, while the sum is 39.

The square root of 855849 is about 925.1210731575. The cubic root of 855849 is about 94.9436045707.

The spelling of 855849 in words is "eight hundred fifty-five thousand, eight hundred forty-nine".