9121005 has 24 divisors (see below), whose sum is σ = 16397472. Its totient is φ = 4863888.

The previous prime is 9121003. The next prime is 9121009. The reversal of 9121005 is 5001219.

It is not a de Polignac number, because 9121005 - 2¹ = 9121003 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121003) 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 23 ways as a sum of consecutive naturals, for example, 2539 + ... + 4968.

It is an arithmetic number, because the mean of its divisors is an integer number (683228).

Almost surely, 2^9121005 is an apocalyptic number.

It is an amenable number.

9121005 is a deficient number, since it is larger than the sum of its proper divisors (7276467).

9121005 is an equidigital number, since it uses as much as digits as its factorization.

9121005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7527 (or 7515 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 9121005 is about 3020.1001639019. The cubic root of 9121005 is about 208.9364595500.

The spelling of 9121005 in words is "nine million, one hundred twenty-one thousand, five".