9878987305 has 16 divisors (see below), whose sum is σ = 12956436288. Its totient is φ = 7171416000.

The previous prime is 9878987231. The next prime is 9878987323. The reversal of 9878987305 is 5037898789.

It is not a de Polignac number, because 9878987305 - 2⁷ = 9878987177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136251 + ... + 195760.

It is an arithmetic number, because the mean of its divisors is an integer number (809777268).

Almost surely, 2^9878987305 is an apocalyptic number.

It is an amenable number.

9878987305 is a deficient number, since it is larger than the sum of its proper divisors (3077448983).

9878987305 is a wasteful number, since it uses less digits than its factorization.

9878987305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332568.

The product of its (nonzero) digits is 30481920, while the sum is 64.

The square root of 9878987305 is about 99393.0948557293. The cubic root of 9878987305 is about 2145.7089322857.

The spelling of 9878987305 in words is "nine billion, eight hundred seventy-eight million, nine hundred eighty-seven thousand, three hundred five".