389850 has 48 divisors (see below), whose sum is σ = 1017792. Its totient is φ = 98560.

The previous prime is 389849. The next prime is 389867. The reversal of 389850 is 58983.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3394 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (21204).

2³⁸⁹⁸⁵⁰ is an apocalyptic number.

389850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 389850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508896).

389850 is an abundant number, since it is smaller than the sum of its proper divisors (627942).

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

389850 is a wasteful number, since it uses less digits than its factorization.

389850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 389850 is about 624.3796921746. The cubic root of 389850 is about 73.0520676888.

The spelling of 389850 in words is "three hundred eighty-nine thousand, eight hundred fifty".