9090202 has 16 divisors (see below), whose sum is σ = 15025824. Its totient is φ = 4090000.

The previous prime is 9090181. The next prime is 9090203. The reversal of 9090202 is 2020909.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (9090203) 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, 177 + ... + 4267.

It is an arithmetic number, because the mean of its divisors is an integer number (939114).

Almost surely, 2^9090202 is an apocalyptic number.

9090202 is a deficient number, since it is larger than the sum of its proper divisors (5935622).

9090202 is a wasteful number, since it uses less digits than its factorization.

9090202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 9090202 is about 3014.9961857356. The cubic root of 9090202 is about 208.7009910407.

Adding to 9090202 its reverse (2020909), we get a palindrome (11111111).

The spelling of 9090202 in words is "nine million, ninety thousand, two hundred two".