888868091 has 2 divisors, whose sum is σ = 888868092. Its totient is φ = 888868090.

The previous prime is 888868081. The next prime is 888868111. The reversal of 888868091 is 190868888.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 888868091 - 2¹⁴ = 888851707 is a prime.

It is not a weakly prime, because it can be changed into another prime (888868031) 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, 444434045 + 444434046.

It is an arithmetic number, because the mean of its divisors is an integer number (444434046).

Almost surely, 2^888868091 is an apocalyptic number.

888868091 is a deficient number, since it is larger than the sum of its proper divisors (1).

888868091 is an equidigital number, since it uses as much as digits as its factorization.

888868091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1769472, while the sum is 56.

The square root of 888868091 is about 29813.8909067569. The cubic root of 888868091 is about 961.4922145432.

The spelling of 888868091 in words is "eight hundred eighty-eight million, eight hundred sixty-eight thousand, ninety-one".