863834 has 16 divisors (see below), whose sum is σ = 1373760. Its totient is φ = 406560.

The previous prime is 863833. The next prime is 863843. The reversal of 863834 is 438368.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 863834.

It is not an unprimeable number, because it can be changed into a prime (863833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3989 + ... + 4199.

It is an arithmetic number, because the mean of its divisors is an integer number (85860).

2⁸⁶³⁸³⁴ is an apocalyptic number.

863834 is a deficient number, since it is larger than the sum of its proper divisors (509926).

863834 is a wasteful number, since it uses less digits than its factorization.

863834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its digits is 13824, while the sum is 32.

The square root of 863834 is about 929.4267050177. The cubic root of 863834 is about 95.2379629919.

The spelling of 863834 in words is "eight hundred sixty-three thousand, eight hundred thirty-four".