9897389 has 4 divisors (see below), whose sum is σ = 10164924. Its totient is φ = 9629856.

The previous prime is 9897367. The next prime is 9897397. The reversal of 9897389 is 9837989.

9897389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 + 1729225 = 2858^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 9897389 - 2¹² = 9893293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9897389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9897319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133712 + ... + 133785.

It is an arithmetic number, because the mean of its divisors is an integer number (2541231).

Almost surely, 2^9897389 is an apocalyptic number.

It is an amenable number.

9897389 is a deficient number, since it is larger than the sum of its proper divisors (267535).

9897389 is a wasteful number, since it uses less digits than its factorization.

9897389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267534.

The product of its digits is 979776, while the sum is 53.

The square root of 9897389 is about 3146.0116020129. The cubic root of 9897389 is about 214.7040384227.

The spelling of 9897389 in words is "nine million, eight hundred ninety-seven thousand, three hundred eighty-nine".