389972 has 12 divisors (see below), whose sum is σ = 744576. Its totient is φ = 177240.

The previous prime is 389971. The next prime is 389981. The reversal of 389972 is 279983.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389971) 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 3 ways as a sum of consecutive naturals, for example, 4388 + ... + 4475.

It is an arithmetic number, because the mean of its divisors is an integer number (62048).

2³⁸⁹⁹⁷² is an apocalyptic number.

It is an amenable number.

389972 is a deficient number, since it is larger than the sum of its proper divisors (354604).

389972 is a wasteful number, since it uses less digits than its factorization.

389972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8878 (or 8876 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 389972 is about 624.4773814959. The cubic root of 389972 is about 73.0596872200.

The spelling of 389972 in words is "three hundred eighty-nine thousand, nine hundred seventy-two".