389555712 has 240 divisors, whose sum is σ = 1385223840. Its totient is φ = 102629376.

The previous prime is 389555711. The next prime is 389555713. The reversal of 389555712 is 217555983.

389555712 is a `hidden beast` number, since 3 + 8 + 95 + 557 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (389555711) and next prime (389555713).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389555711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 418864 + ... + 419792.

It is an arithmetic number, because the mean of its divisors is an integer number (5771766).

Almost surely, 2^389555712 is an apocalyptic number.

389555712 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 389555712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692611920).

389555712 is an abundant number, since it is smaller than the sum of its proper divisors (995668128).

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

389555712 is a wasteful number, since it uses less digits than its factorization.

389555712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 954 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 389555712 is about 19737.1657539780. The cubic root of 389555712 is about 730.3368133615.

The spelling of 389555712 in words is "three hundred eighty-nine million, five hundred fifty-five thousand, seven hundred twelve".