394885 has 4 divisors (see below), whose sum is σ = 473868. Its totient is φ = 315904.

The previous prime is 394879. The next prime is 394897. The reversal of 394885 is 588493.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 83521 = 558^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 394885 - 2¹¹ = 392837 is a prime.

It is a d-powerful number, because it can be written as 3³ + 9 + 8² + 4⁶ + 8² + 5⁸ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 39484 + ... + 39493.

It is an arithmetic number, because the mean of its divisors is an integer number (118467).

2³⁹⁴⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

394885 is a deficient number, since it is larger than the sum of its proper divisors (78983).

394885 is an equidigital number, since it uses as much as digits as its factorization.

394885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78982.

The product of its digits is 34560, while the sum is 37.

The square root of 394885 is about 628.3987587512. The cubic root of 394885 is about 73.3652179989.

It can be divided in two parts, 39488 and 5, that added together give a palindrome (39493).

The spelling of 394885 in words is "three hundred ninety-four thousand, eight hundred eighty-five".