9905087 has 2 divisors, whose sum is σ = 9905088. Its totient is φ = 9905086.

The previous prime is 9905059. The next prime is 9905113. The reversal of 9905087 is 7805099.

It is a strong prime.

It is an emirp because it is prime and its reverse (7805099) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9905087 is a prime.

It is a super-2 number, since 2×9905087² = 196221496955138, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9905087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9905017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4952543 + 4952544.

It is an arithmetic number, because the mean of its divisors is an integer number (4952544).

Almost surely, 2^9905087 is an apocalyptic number.

9905087 is a deficient number, since it is larger than the sum of its proper divisors (1).

9905087 is an equidigital number, since it uses as much as digits as its factorization.

9905087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 9905087 is about 3147.2348180585. The cubic root of 9905087 is about 214.7596882300.

The spelling of 9905087 in words is "nine million, nine hundred five thousand, eighty-seven".