9909133 has 4 divisors (see below), whose sum is σ = 10671388. Its totient is φ = 9146880.

The previous prime is 9909091. The next prime is 9909139. The reversal of 9909133 is 3319099.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6215049 + 3694084 = 2493^2 + 1922^2 .

It is a cyclic number.

It is not a de Polignac number, because 9909133 - 2⁹ = 9908621 is a prime.

9909133 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9909139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381108 + ... + 381133.

It is an arithmetic number, because the mean of its divisors is an integer number (2667847).

Almost surely, 2^9909133 is an apocalyptic number.

It is an amenable number.

9909133 is a deficient number, since it is larger than the sum of its proper divisors (762255).

9909133 is a wasteful number, since it uses less digits than its factorization.

9909133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762254.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 9909133 is about 3147.8775389141. The cubic root of 9909133 is about 214.7889257122.

Subtracting from 9909133 its sum of digits (34), we obtain a palindrome (9909099).

The spelling of 9909133 in words is "nine million, nine hundred nine thousand, one hundred thirty-three".