9123945 has 16 divisors (see below), whose sum is σ = 14640000. Its totient is φ = 4852224.

The previous prime is 9123943. The next prime is 9123949. The reversal of 9123945 is 5493219.

It is not a de Polignac number, because 9123945 - 2¹ = 9123943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9123943) 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 15 ways as a sum of consecutive naturals, for example, 6681 + ... + 7929.

It is an arithmetic number, because the mean of its divisors is an integer number (915000).

Almost surely, 2^9123945 is an apocalyptic number.

It is an amenable number.

9123945 is a deficient number, since it is larger than the sum of its proper divisors (5516055).

9123945 is a wasteful number, since it uses less digits than its factorization.

9123945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744.

The product of its digits is 9720, while the sum is 33.

The square root of 9123945 is about 3020.5868635085. The cubic root of 9123945 is about 208.9589061701.

The spelling of 9123945 in words is "nine million, one hundred twenty-three thousand, nine hundred forty-five".