389504808 has 192 divisors, whose sum is σ = 1359792000. Its totient is φ = 101122560.

The previous prime is 389504803. The next prime is 389504813. The reversal of 389504808 is 808405983.

It is an interprime number because it is at equal distance from previous prime (389504803) and next prime (389504813).

It is not an unprimeable number, because it can be changed into a prime (389504803) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 181888 + ... + 184016.

It is an arithmetic number, because the mean of its divisors is an integer number (7082250).

Almost surely, 2^389504808 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 389504808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679896000).

389504808 is an abundant number, since it is smaller than the sum of its proper divisors (970287192).

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

389504808 is a wasteful number, since it uses less digits than its factorization.

389504808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 389504808 is about 19735.8761649946. The cubic root of 389504808 is about 730.3050004668.

The spelling of 389504808 in words is "three hundred eighty-nine million, five hundred four thousand, eight hundred eight".