389718 has 32 divisors (see below), whose sum is σ = 990720. Its totient is φ = 111240.

The previous prime is 389713. The next prime is 389723. The reversal of 389718 is 817983.

It is an interprime number because it is at equal distance from previous prime (389713) and next prime (389723).

It is an Ulam 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 (389713) 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 15 ways as a sum of consecutive naturals, for example, 138 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (30960).

2³⁸⁹⁷¹⁸ is an apocalyptic number.

389718 is an abundant number, since it is smaller than the sum of its proper divisors (601002).

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

389718 is a wasteful number, since it uses less digits than its factorization.

389718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1043 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 389718 is about 624.2739783140. The cubic root of 389718 is about 73.0438218152.

The spelling of 389718 in words is "three hundred eighty-nine thousand, seven hundred eighteen".