389639068 has 48 divisors (see below), whose sum is σ = 853493760. Its totient is φ = 151521984.

The previous prime is 389639053. The next prime is 389639087. The reversal of 389639068 is 860936983.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12405 + ... + 30547.

It is an arithmetic number, because the mean of its divisors is an integer number (17781120).

Almost surely, 2^389639068 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 389639068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426746880).

389639068 is an abundant number, since it is smaller than the sum of its proper divisors (463854692).

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

389639068 is a wasteful number, since it uses less digits than its factorization.

389639068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18226 (or 18224 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 52.

The square root of 389639068 is about 19739.2772917349. The cubic root of 389639068 is about 730.3889014300.

The spelling of 389639068 in words is "three hundred eighty-nine million, six hundred thirty-nine thousand, sixty-eight".