9111945 has 16 divisors (see below), whose sum is σ = 15082560. Its totient is φ = 4691904.

The previous prime is 9111929. The next prime is 9111959. The reversal of 9111945 is 5491119.

9111945 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9111945 - 2⁴ = 9111929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10039 + ... + 10908.

It is an arithmetic number, because the mean of its divisors is an integer number (942660).

Almost surely, 2^9111945 is an apocalyptic number.

It is an amenable number.

9111945 is a deficient number, since it is larger than the sum of its proper divisors (5970615).

9111945 is a wasteful number, since it uses less digits than its factorization.

9111945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20984.

The product of its digits is 1620, while the sum is 30.

The square root of 9111945 is about 3018.5998409859. The cubic root of 9111945 is about 208.8672569626.

The spelling of 9111945 in words is "nine million, one hundred eleven thousand, nine hundred forty-five".