4228207209 has 20 divisors (see below), whose sum is σ = 6319522176. Its totient is φ = 2817327096.

The previous prime is 4228207201. The next prime is 4228207261. The reversal of 4228207209 is 9027028224.

It is a happy number.

4228207209 is a `hidden beast` number, since 422 + 8 + 20 + 7 + 209 = 666.

It is not a de Polignac number, because 4228207209 - 2³ = 4228207201 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (4228207201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 154452 + ... + 179754.

Almost surely, 2^4228207209 is an apocalyptic number.

It is an amenable number.

4228207209 is a deficient number, since it is larger than the sum of its proper divisors (2091314967).

4228207209 is a wasteful number, since it uses less digits than its factorization.

4228207209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27378 (or 27369 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 4228207209 is about 65024.6661583126. Note that the first 3 decimals coincide. The cubic root of 4228207209 is about 1617.0325202309.

The spelling of 4228207209 in words is "four billion, two hundred twenty-eight million, two hundred seven thousand, two hundred nine".