8663959 has 2 divisors, whose sum is σ = 8663960. Its totient is φ = 8663958.

The previous prime is 8663923. The next prime is 8663969. The reversal of 8663959 is 9593668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8663959 - 2¹⁵ = 8631191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8663969) 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, 4331979 + 4331980.

It is an arithmetic number, because the mean of its divisors is an integer number (4331980).

Almost surely, 2^8663959 is an apocalyptic number.

8663959 is a deficient number, since it is larger than the sum of its proper divisors (1).

8663959 is an equidigital number, since it uses as much as digits as its factorization.

8663959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 8663959 is about 2943.4603785341. The cubic root of 8663959 is about 205.3866112966.

The spelling of 8663959 in words is "eight million, six hundred sixty-three thousand, nine hundred fifty-nine".