389649312 has 192 divisors, whose sum is σ = 1238751360. Its totient is φ = 118444032.

The previous prime is 389649301. The next prime is 389649329. The reversal of 389649312 is 213946983.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1269063 + ... + 1269369.

It is an arithmetic number, because the mean of its divisors is an integer number (6451830).

Almost surely, 2^389649312 is an apocalyptic number.

389649312 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 389649312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619375680).

389649312 is an abundant number, since it is smaller than the sum of its proper divisors (849102048).

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

389649312 is a wasteful number, since it uses less digits than its factorization.

389649312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 438 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 389649312 is about 19739.5367726804. The cubic root of 389649312 is about 730.3953022583.

The spelling of 389649312 in words is "three hundred eighty-nine million, six hundred forty-nine thousand, three hundred twelve".