389500000 has 168 divisors, whose sum is σ = 1033580520. Its totient is φ = 144000000.

The previous prime is 389499991. The next prime is 389500003. The reversal of 389500000 is 5983.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389500003) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9499980 + ... + 9500020.

It is an arithmetic number, because the mean of its divisors is an integer number (6152265).

Almost surely, 2^389500000 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 389500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516790260).

389500000 is an abundant number, since it is smaller than the sum of its proper divisors (644080520).

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

389500000 is an frugal number, since it uses more digits than its factorization.

389500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 389500000 is about 19735.7543559906. The cubic root of 389500000 is about 730.3019955224.

Adding to 389500000 its reverse (5983), we get a palindrome (389505983).

It can be divided in two parts, 38 and 9500000, that multiplied together give a square (361000000 = 19000²).

The spelling of 389500000 in words is "three hundred eighty-nine million, five hundred thousand".