389916 has 18 divisors (see below), whose sum is σ = 985712. Its totient is φ = 129960.

The previous prime is 389911. The next prime is 389923. The reversal of 389916 is 619983.

389916 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 10831 = 389916 / (3 + 8 + 9 + 9 + 1 + 6).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389911) 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 5 ways as a sum of consecutive naturals, for example, 5380 + ... + 5451.

2³⁸⁹⁹¹⁶ is an apocalyptic number.

389916 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

389916 is an abundant number, since it is smaller than the sum of its proper divisors (595796).

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

389916 is a wasteful number, since it uses less digits than its factorization.

389916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841 (or 10836 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 389916 is about 624.4325423935. The cubic root of 389916 is about 73.0561899276.

The spelling of 389916 in words is "three hundred eighty-nine thousand, nine hundred sixteen".