389533312 has 64 divisors (see below), whose sum is σ = 901549440. Its totient is φ = 164183040.

The previous prime is 389533303. The next prime is 389533343. The reversal of 389533312 is 213335983.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51093 + ... + 58219.

It is an arithmetic number, because the mean of its divisors is an integer number (14086710).

Almost surely, 2^389533312 is an apocalyptic number.

389533312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389533312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450774720).

389533312 is an abundant number, since it is smaller than the sum of its proper divisors (512016128).

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

389533312 is an equidigital number, since it uses as much as digits as its factorization.

389533312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209 (or 7197 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The square root of 389533312 is about 19736.5982884589. The cubic root of 389533312 is about 730.3228146294.

The spelling of 389533312 in words is "three hundred eighty-nine million, five hundred thirty-three thousand, three hundred twelve".