9009523 has 4 divisors (see below), whose sum is σ = 9179568. Its totient is φ = 8839480.

The previous prime is 9009521. The next prime is 9009527. The reversal of 9009523 is 3259009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3259009 = 13 ⋅250693.

It is a cyclic number.

It is not a de Polignac number, because 9009523 - 2¹ = 9009521 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9009491 and 9009500.

It is not an unprimeable number, because it can be changed into a prime (9009521) 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 3 ways as a sum of consecutive naturals, for example, 84943 + ... + 85048.

It is an arithmetic number, because the mean of its divisors is an integer number (2294892).

Almost surely, 2^9009523 is an apocalyptic number.

9009523 is a deficient number, since it is larger than the sum of its proper divisors (170045).

9009523 is a wasteful number, since it uses less digits than its factorization.

9009523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170044.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 9009523 is about 3001.5867470390. The cubic root of 9009523 is about 208.0817217710.

The spelling of 9009523 in words is "nine million, nine thousand, five hundred twenty-three".