8223989533 has 2 divisors, whose sum is σ = 8223989534. Its totient is φ = 8223989532.

The previous prime is 8223989491. The next prime is 8223989537. The reversal of 8223989533 is 3359893228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5258860324 + 2965129209 = 72518^2 + 54453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8223989533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8223989537) 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 as a sum of consecutive naturals, namely, 4111994766 + 4111994767.

It is an arithmetic number, because the mean of its divisors is an integer number (4111994767).

Almost surely, 2^8223989533 is an apocalyptic number.

It is an amenable number.

8223989533 is a deficient number, since it is larger than the sum of its proper divisors (1).

8223989533 is an equidigital number, since it uses as much as digits as its factorization.

8223989533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 52.

The square root of 8223989533 is about 90686.2146800714. The cubic root of 8223989533 is about 2018.4942486565.

The spelling of 8223989533 in words is "eight billion, two hundred twenty-three million, nine hundred eighty-nine thousand, five hundred thirty-three".