8885885989 has 2 divisors, whose sum is σ = 8885885990. Its totient is φ = 8885885988.

The previous prime is 8885885947. The next prime is 8885886011. The reversal of 8885885989 is 9895885888.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8754783489 + 131102500 = 93567^2 + 11450^2 .

It is a cyclic number.

It is not a de Polignac number, because 8885885989 - 2²⁵ = 8852331557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8885885909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4442942994 + 4442942995.

It is an arithmetic number, because the mean of its divisors is an integer number (4442942995).

Almost surely, 2^8885885989 is an apocalyptic number.

It is an amenable number.

8885885989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8885885989 is an equidigital number, since it uses as much as digits as its factorization.

8885885989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 530841600, while the sum is 76.

The square root of 8885885989 is about 94264.9775314247. The cubic root of 8885885989 is about 2071.2550433260.

The spelling of 8885885989 in words is "eight billion, eight hundred eighty-five million, eight hundred eighty-five thousand, nine hundred eighty-nine".