394985 has 8 divisors (see below), whose sum is σ = 477576. Its totient is φ = 313600.

The previous prime is 394981. The next prime is 394987. The reversal of 394985 is 589493.

It can be written as a sum of positive squares in 4 ways, for example, as 274576 + 120409 = 524^2 + 347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 394985 - 2² = 394981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 394985.

It is not an unprimeable number, because it can be changed into a prime (394981) 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, 785 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (59697).

2³⁹⁴⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

394985 is a deficient number, since it is larger than the sum of its proper divisors (82591).

394985 is a wasteful number, since it uses less digits than its factorization.

394985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603.

The product of its digits is 38880, while the sum is 38.

The square root of 394985 is about 628.4783210263. The cubic root of 394985 is about 73.3714104369.

The spelling of 394985 in words is "three hundred ninety-four thousand, nine hundred eighty-five".