8549332209 has 24 divisors (see below), whose sum is σ = 13491002304. Its totient is φ = 5173980000.

The previous prime is 8549332199. The next prime is 8549332219. The reversal of 8549332209 is 9022339458.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8549332199) and next prime (8549332219).

It is not a de Polignac number, because 8549332209 - 2⁷ = 8549332081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8549332219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7804 + ... + 130994.

It is an arithmetic number, because the mean of its divisors is an integer number (562125096).

Almost surely, 2^8549332209 is an apocalyptic number.

It is an amenable number.

8549332209 is a deficient number, since it is larger than the sum of its proper divisors (4941670095).

8549332209 is a wasteful number, since it uses less digits than its factorization.

8549332209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123909 (or 123906 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 8549332209 is about 92462.5989738554. The cubic root of 8549332209 is about 2044.7681150583.

The spelling of 8549332209 in words is "eight billion, five hundred forty-nine million, three hundred thirty-two thousand, two hundred nine".