389651808 has 288 divisors, whose sum is σ = 1310432256. Its totient is φ = 99201024.

The previous prime is 389651807. The next prime is 389651861. The reversal of 389651808 is 808156983.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389651807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5337660 + ... + 5337732.

It is an arithmetic number, because the mean of its divisors is an integer number (4550112).

Almost surely, 2^389651808 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 389651808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655216128).

389651808 is an abundant number, since it is smaller than the sum of its proper divisors (920780448).

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

389651808 is a wasteful number, since it uses less digits than its factorization.

389651808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 389651808 is about 19739.5999959472. The cubic root of 389651808 is about 730.3968618340.

The spelling of 389651808 in words is "three hundred eighty-nine million, six hundred fifty-one thousand, eight hundred eight".