389209228 has 12 divisors (see below), whose sum is σ = 697729032. Its totient is φ = 189858080.

The previous prime is 389209213. The next prime is 389209241. The reversal of 389209228 is 822902983.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186450 + ... + 1186777.

It is an arithmetic number, because the mean of its divisors is an integer number (58144086).

Almost surely, 2^389209228 is an apocalyptic number.

It is an amenable number.

389209228 is a deficient number, since it is larger than the sum of its proper divisors (308519804).

389209228 is a wasteful number, since it uses less digits than its factorization.

389209228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373272 (or 2373270 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 389209228 is about 19728.3863506370. The cubic root of 389209228 is about 730.1202203955.

The spelling of 389209228 in words is "three hundred eighty-nine million, two hundred nine thousand, two hundred twenty-eight".