9000390 has 32 divisors (see below), whose sum is σ = 24687360. Its totient is φ = 2057184.

The previous prime is 9000379. The next prime is 9000403. The reversal of 9000390 is 930009.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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, 21220 + ... + 21639.

It is an arithmetic number, because the mean of its divisors is an integer number (771480).

Almost surely, 2^9000390 is an apocalyptic number.

9000390 is an abundant number, since it is smaller than the sum of its proper divisors (15686970).

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

9000390 is a wasteful number, since it uses less digits than its factorization.

9000390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42876.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 9000390 is about 3000.0649992958. The cubic root of 9000390 is about 208.0113868273.

Adding to 9000390 its reverse (930009), we get a palindrome (9930399).

The spelling of 9000390 in words is "nine million, three hundred ninety", and thus it is an aban number.