9901090099 has 4 divisors (see below), whose sum is σ = 9944707464. Its totient is φ = 9857472736.

The previous prime is 9901090091. The next prime is 9901090127. The reversal of 9901090099 is 9900901099.

9901090099 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9901090099 - 2³ = 9901090091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9901090091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21808342 + ... + 21808795.

It is an arithmetic number, because the mean of its divisors is an integer number (2486176866).

Almost surely, 2^9901090099 is an apocalyptic number.

9901090099 is a deficient number, since it is larger than the sum of its proper divisors (43617365).

9901090099 is a wasteful number, since it uses less digits than its factorization.

9901090099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43617364.

The product of its (nonzero) digits is 59049, while the sum is 46.

The square root of 9901090099 is about 99504.2215134614. The cubic root of 9901090099 is about 2147.3079773174.

The spelling of 9901090099 in words is "nine billion, nine hundred one million, ninety thousand, ninety-nine".