9005389 has 4 divisors (see below), whose sum is σ = 9175356. Its totient is φ = 8835424.

The previous prime is 9005387. The next prime is 9005401. The reversal of 9005389 is 9835009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8168164 + 837225 = 2858^2 + 915^2 .

It is a cyclic number.

It is not a de Polignac number, because 9005389 - 2¹ = 9005387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9005387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84904 + ... + 85009.

It is an arithmetic number, because the mean of its divisors is an integer number (2293839).

Almost surely, 2^9005389 is an apocalyptic number.

It is an amenable number.

9005389 is a deficient number, since it is larger than the sum of its proper divisors (169967).

9005389 is a wasteful number, since it uses less digits than its factorization.

9005389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169966.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 9005389 is about 3000.8980322563. The cubic root of 9005389 is about 208.0498909538.

Adding to 9005389 its product of nonzero digits (9720), we get a palindrome (9015109).

The spelling of 9005389 in words is "nine million, five thousand, three hundred eighty-nine".