9090216 has 48 divisors (see below), whose sum is σ = 24766560. Its totient is φ = 3012000.

The previous prime is 9090203. The next prime is 9090217. The reversal of 9090216 is 6120909.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9090216.

It is not an unprimeable number, because it can be changed into a prime (9090217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17821 + ... + 18323.

It is an arithmetic number, because the mean of its divisors is an integer number (515970).

Almost surely, 2^9090216 is an apocalyptic number.

It is an amenable number.

9090216 is an abundant number, since it is smaller than the sum of its proper divisors (15676344).

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

9090216 is a wasteful number, since it uses less digits than its factorization.

9090216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 9090216 is about 3014.9985074623. The cubic root of 9090216 is about 208.7010981822.

The spelling of 9090216 in words is "nine million, ninety thousand, two hundred sixteen".