394394 has 32 divisors (see below), whose sum is σ = 798336. Its totient is φ = 141120.

The previous prime is 394393. The next prime is 394409. The reversal of 394394 is 493493.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 394394.

It is not an unprimeable number, because it can be changed into a prime (394393) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1904 + ... + 2100.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2³⁹⁴³⁹⁴ is an apocalyptic number.

394394 is an abundant number, since it is smaller than the sum of its proper divisors (403942).

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

394394 is a wasteful number, since it uses less digits than its factorization.

394394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230.

The product of its digits is 11664, while the sum is 32.

The square root of 394394 is about 628.0079617330. The cubic root of 394394 is about 73.3347979505.

Subtracting 394394 from its reverse (493493), we obtain a palindrome (99099).

The spelling of 394394 in words is "three hundred ninety-four thousand, three hundred ninety-four".