389487 has 16 divisors (see below), whose sum is σ = 628992. Its totient is φ = 209280.

The previous prime is 389483. The next prime is 389507. The reversal of 389487 is 784983.

It is not a de Polignac number, because 389487 - 2² = 389483 is a prime.

389487 is a lucky number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389483) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 189 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (39312).

2³⁸⁹⁴⁸⁷ is an apocalyptic number.

389487 is a deficient number, since it is larger than the sum of its proper divisors (239505).

389487 is a wasteful number, since it uses less digits than its factorization.

389487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118.

The product of its digits is 48384, while the sum is 39.

The square root of 389487 is about 624.0889359699. The cubic root of 389487 is about 73.0293870549.

The spelling of 389487 in words is "three hundred eighty-nine thousand, four hundred eighty-seven".