9806827984 has 10 divisors (see below), whose sum is σ = 19000729250. Its totient is φ = 4903413984.

The previous prime is 9806827951. The next prime is 9806827993. The reversal of 9806827984 is 4897286089.

It can be written as a sum of positive squares in only one way, i.e., 9239054400 + 567773584 = 96120^2 + 23828^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306463359 + ... + 306463390.

It is an arithmetic number, because the mean of its divisors is an integer number (1900072925).

Almost surely, 2^9806827984 is an apocalyptic number.

It is an amenable number.

9806827984 is a deficient number, since it is larger than the sum of its proper divisors (9193901266).

9806827984 is a wasteful number, since it uses less digits than its factorization.

9806827984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612926757 (or 612926751 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 61.

The square root of 9806827984 is about 99029.4298882913. The cubic root of 9806827984 is about 2140.4718428519.

The spelling of 9806827984 in words is "nine billion, eight hundred six million, eight hundred twenty-seven thousand, nine hundred eighty-four".