9901089109 has 8 divisors (see below), whose sum is σ = 9938795832. Its totient is φ = 9863409600.

The previous prime is 9901089097. The next prime is 9901089127. The reversal of 9901089109 is 9019801099.

It can be written as a sum of positive squares in 4 ways, for example, as 8813078884 + 1088010225 = 93878^2 + 32985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9901089109 - 2⁹ = 9901088597 is a prime.

It is a Duffinian number.

9901089109 is a modest number, since divided by 89109 gives 9901 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901059109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995059 + ... + 1004959.

It is an arithmetic number, because the mean of its divisors is an integer number (1242349479).

Almost surely, 2^9901089109 is an apocalyptic number.

It is an amenable number.

9901089109 is a deficient number, since it is larger than the sum of its proper divisors (37706723).

9901089109 is a wasteful number, since it uses less digits than its factorization.

9901089109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13607.

The product of its (nonzero) digits is 52488, while the sum is 46.

The square root of 9901089109 is about 99504.2165387980. The cubic root of 9901089109 is about 2147.3079057483.

The spelling of 9901089109 in words is "nine billion, nine hundred one million, eighty-nine thousand, one hundred nine".