8809389 has 6 divisors (see below), whose sum is σ = 12724686. Its totient is φ = 5872920.

The previous prime is 8809387. The next prime is 8809393. The reversal of 8809389 is 9839088.

8809389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4536900 + 4272489 = 2130^2 + 2067^2 .

It is not a de Polignac number, because 8809389 - 2¹ = 8809387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8809387) 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 5 ways as a sum of consecutive naturals, for example, 489402 + ... + 489419.

It is an arithmetic number, because the mean of its divisors is an integer number (2120781).

Almost surely, 2^8809389 is an apocalyptic number.

It is an amenable number.

8809389 is a deficient number, since it is larger than the sum of its proper divisors (3915297).

8809389 is a wasteful number, since it uses less digits than its factorization.

8809389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978827 (or 978824 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 8809389 is about 2968.0614885814. The cubic root of 8809389 is about 206.5294218270.

The spelling of 8809389 in words is "eight million, eight hundred nine thousand, three hundred eighty-nine".