8656393 has 2 divisors, whose sum is σ = 8656394. Its totient is φ = 8656392.

The previous prime is 8656379. The next prime is 8656399. The reversal of 8656393 is 3936568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7038409 + 1617984 = 2653^2 + 1272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8656393 is a prime.

It is not a weakly prime, because it can be changed into another prime (8656399) 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, 4328196 + 4328197.

It is an arithmetic number, because the mean of its divisors is an integer number (4328197).

Almost surely, 2^8656393 is an apocalyptic number.

It is an amenable number.

8656393 is a deficient number, since it is larger than the sum of its proper divisors (1).

8656393 is an equidigital number, since it uses as much as digits as its factorization.

8656393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 8656393 is about 2942.1748758359. The cubic root of 8656393 is about 205.3268077024.

The spelling of 8656393 in words is "eight million, six hundred fifty-six thousand, three hundred ninety-three".