393834 has 16 divisors (see below), whose sum is σ = 900288. Its totient is φ = 112512.

The previous prime is 393797. The next prime is 393847. The reversal of 393834 is 438393.

It is a happy number.

It is an unprimeable number.

393834 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4647 + ... + 4730.

It is an arithmetic number, because the mean of its divisors is an integer number (56268).

2³⁹³⁸³⁴ is an apocalyptic number.

393834 is an abundant number, since it is smaller than the sum of its proper divisors (506454).

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

393834 is a wasteful number, since it uses less digits than its factorization.

393834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9389.

The product of its digits is 7776, while the sum is 30.

The square root of 393834 is about 627.5619491333. The cubic root of 393834 is about 73.3000721523.

The spelling of 393834 in words is "three hundred ninety-three thousand, eight hundred thirty-four".