390185 has 8 divisors (see below), whose sum is σ = 475080. Its totient is φ = 307584.

The previous prime is 390161. The next prime is 390191. The reversal of 390185 is 581093.

It can be written as a sum of positive squares in 4 ways, for example, as 43264 + 346921 = 208^2 + 589^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 390185 - 2¹⁰ = 389161 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (59385).

2³⁹⁰¹⁸⁵ is an apocalyptic number.

It is an amenable number.

390185 is a deficient number, since it is larger than the sum of its proper divisors (84895).

390185 is a wasteful number, since it uses less digits than its factorization.

390185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 390185 is about 624.6479008209. The cubic root of 390185 is about 73.0729863637.

It can be divided in two parts, 390 and 185, that added together give a palindrome (575).

The spelling of 390185 in words is "three hundred ninety thousand, one hundred eighty-five".