389912012 has 36 divisors (see below), whose sum is σ = 798868224. Its totient is φ = 166027680.

The previous prime is 389912011. The next prime is 389912021. The reversal of 389912012 is 210219983.

It is not an unprimeable number, because it can be changed into a prime (389912011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24437 + ... + 37107.

It is an arithmetic number, because the mean of its divisors is an integer number (22190784).

Almost surely, 2^389912012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389912012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399434112).

389912012 is an abundant number, since it is smaller than the sum of its proper divisors (408956212).

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

389912012 is a wasteful number, since it uses less digits than its factorization.

389912012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12846 (or 12837 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 389912012 is about 19746.1898096823. The cubic root of 389912012 is about 730.5594085762.

The spelling of 389912012 in words is "three hundred eighty-nine million, nine hundred twelve thousand, twelve".