8393813 has 2 divisors, whose sum is σ = 8393814. Its totient is φ = 8393812.

The previous prime is 8393773. The next prime is 8393821. The reversal of 8393813 is 3183938.

8393813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6340324 + 2053489 = 2518^2 + 1433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8393813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8393863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4196906 + 4196907.

It is an arithmetic number, because the mean of its divisors is an integer number (4196907).

Almost surely, 2^8393813 is an apocalyptic number.

It is an amenable number.

8393813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8393813 is an equidigital number, since it uses as much as digits as its factorization.

8393813 is an odious number, because the sum of its binary digits is odd.

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

The square root of 8393813 is about 2897.2077937214. The cubic root of 8393813 is about 203.2293508169.

The spelling of 8393813 in words is "eight million, three hundred ninety-three thousand, eight hundred thirteen".