394820 has 24 divisors (see below), whose sum is σ = 873600. Its totient is φ = 149472.

The previous prime is 394819. The next prime is 394829. The reversal of 394820 is 28493.

It is a self number, because there is not a number n which added to its sum of digits gives 394820.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 394820.

It is not an unprimeable number, because it can be changed into a prime (394829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (36400).

2³⁹⁴⁸²⁰ is an apocalyptic number.

It is an amenable number.

394820 is an abundant number, since it is smaller than the sum of its proper divisors (478780).

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

394820 is a wasteful number, since it uses less digits than its factorization.

394820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 394820 is about 628.3470378700. The cubic root of 394820 is about 73.3611923536.

The spelling of 394820 in words is "three hundred ninety-four thousand, eight hundred twenty".