8939609 has 16 divisors (see below), whose sum is σ = 10608000. Its totient is φ = 7528752.

The previous prime is 8939597. The next prime is 8939699. The reversal of 8939609 is 9069398.

It is not a de Polignac number, because 8939609 - 2²⁰ = 7891033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8939609.

It is not an unprimeable number, because it can be changed into a prime (8939699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22787 + ... + 23175.

It is an arithmetic number, because the mean of its divisors is an integer number (663000).

Almost surely, 2^8939609 is an apocalyptic number.

It is an amenable number.

8939609 is a deficient number, since it is larger than the sum of its proper divisors (1668391).

8939609 is an equidigital number, since it uses as much as digits as its factorization.

8939609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 8939609 is about 2989.9178918492. The cubic root of 8939609 is about 207.5420846560.

The spelling of 8939609 in words is "eight million, nine hundred thirty-nine thousand, six hundred nine".