9805885087 has 2 divisors, whose sum is σ = 9805885088. Its totient is φ = 9805885086.

The previous prime is 9805885057. The next prime is 9805885093. The reversal of 9805885087 is 7805885089.

It is a strong prime.

It is an emirp because it is prime and its reverse (7805885089) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9805885087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9805885057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4902942543 + 4902942544.

It is an arithmetic number, because the mean of its divisors is an integer number (4902942544).

Almost surely, 2^9805885087 is an apocalyptic number.

9805885087 is a deficient number, since it is larger than the sum of its proper divisors (1).

9805885087 is an equidigital number, since it uses as much as digits as its factorization.

9805885087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6451200, while the sum is 58.

The square root of 9805885087 is about 99024.6690830118. The cubic root of 9805885087 is about 2140.4032406777.

The spelling of 9805885087 in words is "nine billion, eight hundred five million, eight hundred eighty-five thousand, eighty-seven".