389839400 has 96 divisors (see below), whose sum is σ = 940044000. Its totient is φ = 150232320.

The previous prime is 389839381. The next prime is 389839403. The reversal of 389839400 is 4938983.

It is not an unprimeable number, because it can be changed into a prime (389839403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1028411 + ... + 1028789.

It is an arithmetic number, because the mean of its divisors is an integer number (9792125).

Almost surely, 2^389839400 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 389839400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470022000).

389839400 is an abundant number, since it is smaller than the sum of its proper divisors (550204600).

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

389839400 is a wasteful number, since it uses less digits than its factorization.

389839400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 389839400 is about 19744.3510908817. The cubic root of 389839400 is about 730.5140558886.

The spelling of 389839400 in words is "three hundred eighty-nine million, eight hundred thirty-nine thousand, four hundred".