8909109 has 42 divisors (see below), whose sum is σ = 14827638. Its totient is φ = 5346000.

The previous prime is 8909101. The next prime is 8909143. The reversal of 8909109 is 9019098.

It can be written as a sum of positive squares in only one way, i.e., 8820900 + 88209 = 2970^2 + 297^2 .

It is not a de Polignac number, because 8909109 - 2³ = 8909101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8909101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 88159 + ... + 88259.

It is an arithmetic number, because the mean of its divisors is an integer number (353039).

Almost surely, 2^8909109 is an apocalyptic number.

It is an amenable number.

8909109 is a deficient number, since it is larger than the sum of its proper divisors (5918529).

8909109 is a wasteful number, since it uses less digits than its factorization.

8909109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 8909109 is about 2984.8130594729. The cubic root of 8909109 is about 207.3057862467.

It can be divided in two parts, 890 and 9109, that added together give a palindrome (9999).

The spelling of 8909109 in words is "eight million, nine hundred nine thousand, one hundred nine".