8663899 has 2 divisors, whose sum is σ = 8663900. Its totient is φ = 8663898.

The previous prime is 8663869. The next prime is 8663923. The reversal of 8663899 is 9983668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8663899 - 2¹³ = 8655707 is a prime.

It is not a weakly prime, because it can be changed into another prime (8663819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4331949 + 4331950.

It is an arithmetic number, because the mean of its divisors is an integer number (4331950).

Almost surely, 2^8663899 is an apocalyptic number.

8663899 is a deficient number, since it is larger than the sum of its proper divisors (1).

8663899 is an equidigital number, since it uses as much as digits as its factorization.

8663899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 8663899 is about 2943.4501864309. The cubic root of 8663899 is about 205.3861371782.

The spelling of 8663899 in words is "eight million, six hundred sixty-three thousand, eight hundred ninety-nine".