394205 has 12 divisors (see below), whose sum is σ = 550620. Its totient is φ = 270144.

The previous prime is 394201. The next prime is 394211. The reversal of 394205 is 502493.

It can be written as a sum of positive squares in 2 ways, for example, as 290521 + 103684 = 539^2 + 322^2 .

It is not a de Polignac number, because 394205 - 2² = 394201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 560 + ... + 1049.

It is an arithmetic number, because the mean of its divisors is an integer number (45885).

2³⁹⁴²⁰⁵ is an apocalyptic number.

394205 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

394205 is a deficient number, since it is larger than the sum of its proper divisors (156415).

394205 is a wasteful number, since it uses less digits than its factorization.

394205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 394205 is about 627.8574679018. The cubic root of 394205 is about 73.3230816707.

Adding to 394205 its reverse (502493), we get a palindrome (896698).

The spelling of 394205 in words is "three hundred ninety-four thousand, two hundred five".