9930521105 has 16 divisors (see below), whose sum is σ = 11971379664. Its totient is φ = 7907988480.

The previous prime is 9930521077. The next prime is 9930521137. The reversal of 9930521105 is 5011250399.

It is a Cunningham number, because it is equal to 99652²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 5860208704 + 4070312401 = 76552^2 + 63799^2 .

It is not a de Polignac number, because 9930521105 - 2⁸ = 9930520849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1202069 + ... + 1210301.

It is an arithmetic number, because the mean of its divisors is an integer number (748211229).

Almost surely, 2^9930521105 is an apocalyptic number.

It is an amenable number.

9930521105 is a deficient number, since it is larger than the sum of its proper divisors (2040858559).

9930521105 is a wasteful number, since it uses less digits than its factorization.

9930521105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 9930521105 is about 99652.0000050175. Note that the first 5 decimals coincide. The cubic root of 9930521105 is about 2149.4334981229.

The spelling of 9930521105 in words is "nine billion, nine hundred thirty million, five hundred twenty-one thousand, one hundred five".