8394989 has 4 divisors (see below), whose sum is σ = 8446656. Its totient is φ = 8343324.

The previous prime is 8394983. The next prime is 8395021. The reversal of 8394989 is 9894938.

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.

It is a cyclic number.

It is not a de Polignac number, because 8394989 - 2⁸ = 8394733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8394983) 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, 25589 + ... + 25914.

It is an arithmetic number, because the mean of its divisors is an integer number (2111664).

Almost surely, 2^8394989 is an apocalyptic number.

It is an amenable number.

8394989 is a deficient number, since it is larger than the sum of its proper divisors (51667).

8394989 is a wasteful number, since it uses less digits than its factorization.

8394989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51666.

The product of its digits is 559872, while the sum is 50.

The square root of 8394989 is about 2897.4107406441. The cubic root of 8394989 is about 203.2388414007.

The spelling of 8394989 in words is "eight million, three hundred ninety-four thousand, nine hundred eighty-nine".