855449 has 4 divisors (see below), whose sum is σ = 977664. Its totient is φ = 733236.

The previous prime is 855431. The next prime is 855461. The reversal of 855449 is 944558.

855449 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 a de Polignac number, because none of the positive numbers 2^k-855449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855419) 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, 61097 + ... + 61110.

It is an arithmetic number, because the mean of its divisors is an integer number (244416).

2⁸⁵⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

855449 is a deficient number, since it is larger than the sum of its proper divisors (122215).

855449 is a wasteful number, since it uses less digits than its factorization.

855449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122214.

The product of its digits is 28800, while the sum is 35.

The square root of 855449 is about 924.9048599721. The cubic root of 855449 is about 94.9288109331.

The spelling of 855449 in words is "eight hundred fifty-five thousand, four hundred forty-nine".