9910091 has 4 divisors (see below), whose sum is σ = 10120992. Its totient is φ = 9699192.

The previous prime is 9910073. The next prime is 9910097. The reversal of 9910091 is 1900199.

9910091 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 9910091 - 2¹⁴ = 9893707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9910097) 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, 105380 + ... + 105473.

It is an arithmetic number, because the mean of its divisors is an integer number (2530248).

Almost surely, 2^9910091 is an apocalyptic number.

9910091 is a deficient number, since it is larger than the sum of its proper divisors (210901).

9910091 is a wasteful number, since it uses less digits than its factorization.

9910091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210900.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 9910091 is about 3148.0297012576. The cubic root of 9910091 is about 214.7958473120.

The spelling of 9910091 in words is "nine million, nine hundred ten thousand, ninety-one".