390189 has 8 divisors (see below), whose sum is σ = 525312. Its totient is φ = 257600.

The previous prime is 390161. The next prime is 390191. The reversal of 390189 is 981093.

It is a happy number.

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 390189 - 2⁵ = 390157 is a prime.

It is a Curzon number.

390189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237 + ... + 914.

It is an arithmetic number, because the mean of its divisors is an integer number (65664).

2³⁹⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

390189 is a deficient number, since it is larger than the sum of its proper divisors (135123).

390189 is a wasteful number, since it uses less digits than its factorization.

390189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 390189 is about 624.6511026165. The cubic root of 390189 is about 73.0732360666.

The spelling of 390189 in words is "three hundred ninety thousand, one hundred eighty-nine".