389818208 has 48 divisors (see below), whose sum is σ = 828727200. Its totient is φ = 179429376.

The previous prime is 389818207. The next prime is 389818217. The reversal of 389818208 is 802818983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389818207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185741 + ... + 187827.

It is an arithmetic number, because the mean of its divisors is an integer number (17265150).

Almost surely, 2^389818208 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 389818208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414363600).

389818208 is an abundant number, since it is smaller than the sum of its proper divisors (438908992).

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

389818208 is a wasteful number, since it uses less digits than its factorization.

389818208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559 (or 2551 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 47.

The square root of 389818208 is about 19743.8144237632. The cubic root of 389818208 is about 730.5008185278.

The spelling of 389818208 in words is "three hundred eighty-nine million, eight hundred eighteen thousand, two hundred eight".