8390389 has 8 divisors (see below), whose sum is σ = 9610560. Its totient is φ = 7175616.

The previous prime is 8390359. The next prime is 8390399. The reversal of 8390389 is 9830938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8390389 - 2⁹ = 8389877 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 (8390329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2877 + ... + 5005.

It is an arithmetic number, because the mean of its divisors is an integer number (1201320).

Almost surely, 2^8390389 is an apocalyptic number.

It is an amenable number.

8390389 is a deficient number, since it is larger than the sum of its proper divisors (1220171).

8390389 is a wasteful number, since it uses less digits than its factorization.

8390389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 8390389 is about 2896.6168196708. The cubic root of 8390389 is about 203.2017133202.

The spelling of 8390389 in words is "eight million, three hundred ninety thousand, three hundred eighty-nine".