9000040 has 32 divisors (see below), whose sum is σ = 23143680. Its totient is φ = 3085632.

The previous prime is 9000011. The next prime is 9000041. The reversal of 9000040 is 400009.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9000041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15792 + ... + 16351.

It is an arithmetic number, because the mean of its divisors is an integer number (723240).

Almost surely, 2^9000040 is an apocalyptic number.

It is an amenable number.

9000040 is an abundant number, since it is smaller than the sum of its proper divisors (14143640).

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

9000040 is a wasteful number, since it uses less digits than its factorization.

9000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32161 (or 32157 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 9000040 is about 3000.0066666593. The cubic root of 9000040 is about 208.0086904653.

Adding to 9000040 its reverse (400009), we get a palindrome (9400049).

The spelling of 9000040 in words is "nine million, forty", and thus it is an aban number and an uban number.