8997389 has 4 divisors (see below), whose sum is σ = 9111360. Its totient is φ = 8883420.

The previous prime is 8997353. The next prime is 8997407. The reversal of 8997389 is 9837998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9837998 = 2 ⋅4918999.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8997389 is a prime.

It is a d-powerful number, because it can be written as 8⁷ + 9 + 9² + 7³ + 3⁹ + 8⁷ + 9⁷ .

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 8997389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8997319) 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, 56867 + ... + 57024.

It is an arithmetic number, because the mean of its divisors is an integer number (2277840).

Almost surely, 2^8997389 is an apocalyptic number.

It is an amenable number.

8997389 is a deficient number, since it is larger than the sum of its proper divisors (113971).

8997389 is a wasteful number, since it uses less digits than its factorization.

8997389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113970.

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

The square root of 8997389 is about 2999.5648017671. The cubic root of 8997389 is about 207.9882651787.

The spelling of 8997389 in words is "eight million, nine hundred ninety-seven thousand, three hundred eighty-nine".