863884 has 12 divisors (see below), whose sum is σ = 1727824. Its totient is φ = 370224.

The previous prime is 863879. The next prime is 863887. The reversal of 863884 is 488368.

863884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

863884 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (863887) 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, 15399 + ... + 15454.

2⁸⁶³⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

863884 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

863884 is a wasteful number, since it uses less digits than its factorization.

863884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30864 (or 30862 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 863884 is about 929.4536029302. The cubic root of 863884 is about 95.2398004615.

The spelling of 863884 in words is "eight hundred sixty-three thousand, eight hundred eighty-four".