8227993 has 2 divisors, whose sum is σ = 8227994. Its totient is φ = 8227992.

The previous prime is 8227987. The next prime is 8228009. The reversal of 8227993 is 3997228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5031049 + 3196944 = 2243^2 + 1788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8227993 is a prime.

It is not a weakly prime, because it can be changed into another prime (8227943) 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, 4113996 + 4113997.

It is an arithmetic number, because the mean of its divisors is an integer number (4113997).

Almost surely, 2^8227993 is an apocalyptic number.

It is an amenable number.

8227993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8227993 is an equidigital number, since it uses as much as digits as its factorization.

8227993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 8227993 is about 2868.4478381173. The cubic root of 8227993 is about 201.8821732220.

The spelling of 8227993 in words is "eight million, two hundred twenty-seven thousand, nine hundred ninety-three".