389222000 has 80 divisors (see below), whose sum is σ = 954742464. Its totient is φ = 153440000.

The previous prime is 389221999. The next prime is 389222003. The reversal of 389222000 is 222983.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389222003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140630 + ... + 143370.

Almost surely, 2^389222000 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 389222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477371232).

389222000 is an abundant number, since it is smaller than the sum of its proper divisors (565520464).

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

389222000 is a wasteful number, since it uses less digits than its factorization.

389222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2835 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 389222000 is about 19728.7100439943. The cubic root of 389222000 is about 730.1282066685.

Adding to 389222000 its reverse (222983), we get a palindrome (389444983).

The spelling of 389222000 in words is "three hundred eighty-nine million, two hundred twenty-two thousand".