9909911901 has 8 divisors (see below), whose sum is σ = 13213755520. Its totient is φ = 6606338112.

The previous prime is 9909911899. The next prime is 9909911927. The reversal of 9909911901 is 1091199099.

9909911901 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9909911901 - 2¹ = 9909911899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9909911101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45045 + ... + 147813.

It is an arithmetic number, because the mean of its divisors is an integer number (1651719440).

Almost surely, 2^9909911901 is an apocalyptic number.

It is an amenable number.

9909911901 is a deficient number, since it is larger than the sum of its proper divisors (3303843619).

9909911901 is a wasteful number, since it uses less digits than its factorization.

9909911901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134915.

The product of its (nonzero) digits is 59049, while the sum is 48.

The square root of 9909911901 is about 99548.5404262664. The cubic root of 9909911901 is about 2147.9455334632.

The spelling of 9909911901 in words is "nine billion, nine hundred nine million, nine hundred eleven thousand, nine hundred one".