389018 has 16 divisors (see below), whose sum is σ = 685824. Its totient is φ = 162000.

The previous prime is 389003. The next prime is 389023. The reversal of 389018 is 810983.

It is a happy number.

It is a Cunningham number, because it is equal to 73³+1.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (42864).

389018 is a Friedman number, since it can be written as (9+8*8)^3+1+0, using all its digits and the basic arithmetic operations.

2³⁸⁹⁰¹⁸ is an apocalyptic number.

389018 is a deficient number, since it is larger than the sum of its proper divisors (296806).

389018 is a wasteful number, since it uses less digits than its factorization.

389018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 389018 is about 623.7130750594. The cubic root of 389018 is about 73.0000625508. Note that the first 4 decimals are identical.

The spelling of 389018 in words is "three hundred eighty-nine thousand, eighteen".