8390 has 8 divisors (see below), whose sum is σ = 15120. Its totient is φ = 3352.

The previous prime is 8389. The next prime is 8419. The reversal of 8390 is 938.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 8390.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410 + ... + 429.

It is an arithmetic number, because the mean of its divisors is an integer number (1890).

8390 is a deficient number, since it is larger than the sum of its proper divisors (6730).

8390 is a wasteful number, since it uses less digits than its factorization.

8390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 8390 is about 91.5969431804. The cubic root of 8390 is about 20.3198572954.

The spelling of 8390 in words is "eight thousand, three hundred ninety".