8868479989 has 2 divisors, whose sum is σ = 8868479990. Its totient is φ = 8868479988.

The previous prime is 8868479953. The next prime is 8868480007. The reversal of 8868479989 is 9899748688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7716216964 + 1152263025 = 87842^2 + 33945^2 .

It is a cyclic number.

It is not a de Polignac number, because 8868479989 - 2⁷ = 8868479861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8868479929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4434239994 + 4434239995.

It is an arithmetic number, because the mean of its divisors is an integer number (4434239995).

Almost surely, 2^8868479989 is an apocalyptic number.

It is an amenable number.

8868479989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8868479989 is an equidigital number, since it uses as much as digits as its factorization.

8868479989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 501645312, while the sum is 76.

The square root of 8868479989 is about 94172.6074238151. The cubic root of 8868479989 is about 2069.9017424791.

The spelling of 8868479989 in words is "eight billion, eight hundred sixty-eight million, four hundred seventy-nine thousand, nine hundred eighty-nine".