8887991087 has 2 divisors, whose sum is σ = 8887991088. Its totient is φ = 8887991086.

The previous prime is 8887991053. The next prime is 8887991113. The reversal of 8887991087 is 7801997888.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8887991087 - 2¹⁰ = 8887990063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8887991887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4443995543 + 4443995544.

It is an arithmetic number, because the mean of its divisors is an integer number (4443995544).

Almost surely, 2^8887991087 is an apocalyptic number.

8887991087 is a deficient number, since it is larger than the sum of its proper divisors (1).

8887991087 is an equidigital number, since it uses as much as digits as its factorization.

8887991087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16257024, while the sum is 65.

The square root of 8887991087 is about 94276.1427244454. The cubic root of 8887991087 is about 2071.4185929741.

The spelling of 8887991087 in words is "eight billion, eight hundred eighty-seven million, nine hundred ninety-one thousand, eighty-seven".