9009520 has 40 divisors (see below), whose sum is σ = 22561056. Its totient is φ = 3326208.

The previous prime is 9009509. The next prime is 9009521. The reversal of 9009520 is 259009.

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is a congruent number.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3292 + ... + 5371.

Almost surely, 2^9009520 is an apocalyptic number.

It is an amenable number.

9009520 is an abundant number, since it is smaller than the sum of its proper divisors (13551536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9009520 is a wasteful number, since it uses less digits than its factorization.

9009520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8689 (or 8683 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 9009520 is about 3001.5862473032. The cubic root of 9009520 is about 208.0816986753.

The spelling of 9009520 in words is "nine million, nine thousand, five hundred twenty".