8318393 has 4 divisors (see below), whose sum is σ = 8511888. Its totient is φ = 8124900.

The previous prime is 8318381. The next prime is 8318411. The reversal of 8318393 is 3938138.

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: 3938138 = 2 ⋅1969069.

It is a cyclic number.

It is not a de Polignac number, because 8318393 - 2⁶ = 8318329 is a prime.

It is a super-3 number, since 3×8318393³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8318353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96683 + ... + 96768.

It is an arithmetic number, because the mean of its divisors is an integer number (2127972).

Almost surely, 2^8318393 is an apocalyptic number.

It is an amenable number.

8318393 is a deficient number, since it is larger than the sum of its proper divisors (193495).

8318393 is a wasteful number, since it uses less digits than its factorization.

8318393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193494.

The product of its digits is 15552, while the sum is 35.

The square root of 8318393 is about 2884.1624434140. The cubic root of 8318393 is about 202.6188338730.

The spelling of 8318393 in words is "eight million, three hundred eighteen thousand, three hundred ninety-three".