8120393 has 2 divisors, whose sum is σ = 8120394. Its totient is φ = 8120392.

The previous prime is 8120383. The next prime is 8120459. The reversal of 8120393 is 3930218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8048569 + 71824 = 2837^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 8120393 - 2¹⁰ = 8119369 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8120363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060196 + 4060197.

It is an arithmetic number, because the mean of its divisors is an integer number (4060197).

Almost surely, 2^8120393 is an apocalyptic number.

It is an amenable number.

8120393 is a deficient number, since it is larger than the sum of its proper divisors (1).

8120393 is an equidigital number, since it uses as much as digits as its factorization.

8120393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 8120393 is about 2849.6303269021. The cubic root of 8120393 is about 200.9982838562.

The spelling of 8120393 in words is "eight million, one hundred twenty thousand, three hundred ninety-three".