855384 has 32 divisors (see below), whose sum is σ = 2214000. Its totient is φ = 275072.

The previous prime is 855377. The next prime is 855391. The reversal of 855384 is 483558.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (855377) and next prime (855391).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82 + ... + 1310.

2⁸⁵⁵³⁸⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107000).

855384 is an abundant number, since it is smaller than the sum of its proper divisors (1358616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855384 is a wasteful number, since it uses less digits than its factorization.

855384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1263 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 855384 is about 924.8697205553. The cubic root of 855384 is about 94.9264065314.

The spelling of 855384 in words is "eight hundred fifty-five thousand, three hundred eighty-four".