389490 has 16 divisors (see below), whose sum is σ = 934848. Its totient is φ = 103856.

The previous prime is 389483. The next prime is 389507. The reversal of 389490 is 94983.

389490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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, 6462 + ... + 6521.

It is an arithmetic number, because the mean of its divisors is an integer number (58428).

2³⁸⁹⁴⁹⁰ is an apocalyptic number.

389490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389490 is an abundant number, since it is smaller than the sum of its proper divisors (545358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389490 is a wasteful number, since it uses less digits than its factorization.

389490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12993.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 389490 is about 624.0913394688. The cubic root of 389490 is about 73.0295745559.

The spelling of 389490 in words is "three hundred eighty-nine thousand, four hundred ninety".