9091222 has 16 divisors (see below), whose sum is σ = 15628032. Its totient is φ = 3885480.

The previous prime is 9091219. The next prime is 9091223. The reversal of 9091222 is 2221909.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9091223) 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, 6397 + ... + 7687.

It is an arithmetic number, because the mean of its divisors is an integer number (976752).

Almost surely, 2^9091222 is an apocalyptic number.

9091222 is a deficient number, since it is larger than the sum of its proper divisors (6536810).

9091222 is a wasteful number, since it uses less digits than its factorization.

9091222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 9091222 is about 3015.1653354335. The cubic root of 9091222 is about 208.7087967730.

The spelling of 9091222 in words is "nine million, ninety-one thousand, two hundred twenty-two".