389140228 has 12 divisors (see below), whose sum is σ = 692159692. Its totient is φ = 191380320.

The previous prime is 389140201. The next prime is 389140229. The reversal of 389140228 is 822041983.

It can be written as a sum of positive squares in 2 ways, for example, as 157552704 + 231587524 = 12552^2 + 15218^2 .

It is not an unprimeable number, because it can be changed into a prime (389140229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797175 + ... + 797662.

Almost surely, 2^389140228 is an apocalyptic number.

It is an amenable number.

389140228 is a deficient number, since it is larger than the sum of its proper divisors (303019464).

389140228 is a wasteful number, since it uses less digits than its factorization.

389140228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594902 (or 1594900 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 389140228 is about 19726.6375239167. The cubic root of 389140228 is about 730.0770719902.

The spelling of 389140228 in words is "three hundred eighty-nine million, one hundred forty thousand, two hundred twenty-eight".