394905 has 16 divisors (see below), whose sum is σ = 722304. Its totient is φ = 180480.

The previous prime is 394897. The next prime is 394931. The reversal of 394905 is 509493.

It is not a de Polignac number, because 394905 - 2³ = 394897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1776 + ... + 1985.

It is an arithmetic number, because the mean of its divisors is an integer number (45144).

2³⁹⁴⁹⁰⁵ is an apocalyptic number.

394905 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

394905 is a deficient number, since it is larger than the sum of its proper divisors (327399).

394905 is a wasteful number, since it uses less digits than its factorization.

394905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3776.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 394905 is about 628.4146720120. The cubic root of 394905 is about 73.3664565701.

The spelling of 394905 in words is "three hundred ninety-four thousand, nine hundred five".