9123091 has 4 divisors (see below), whose sum is σ = 9143512. Its totient is φ = 9102672.

The previous prime is 9123089. The next prime is 9123109. The reversal of 9123091 is 1903219.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1903219 = 229 ⋅8311.

It is a cyclic number.

It is not a de Polignac number, because 9123091 - 2¹ = 9123089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9123031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9525 + ... + 10438.

It is an arithmetic number, because the mean of its divisors is an integer number (2285878).

Almost surely, 2^9123091 is an apocalyptic number.

9123091 is a deficient number, since it is larger than the sum of its proper divisors (20421).

9123091 is a wasteful number, since it uses less digits than its factorization.

9123091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20420.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 9123091 is about 3020.4454969425. The cubic root of 9123091 is about 208.9523864584.

The spelling of 9123091 in words is "nine million, one hundred twenty-three thousand, ninety-one".