9090806 has 4 divisors (see below), whose sum is σ = 13636212. Its totient is φ = 4545402.

The previous prime is 9090793. The next prime is 9090811. The reversal of 9090806 is 6080909.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272700 + ... + 2272703.

It is an arithmetic number, because the mean of its divisors is an integer number (3409053).

Almost surely, 2^9090806 is an apocalyptic number.

9090806 is a deficient number, since it is larger than the sum of its proper divisors (4545406).

9090806 is a wasteful number, since it uses less digits than its factorization.

9090806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545405.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 9090806 is about 3015.0963500359. The cubic root of 9090806 is about 208.7056133291.

The spelling of 9090806 in words is "nine million, ninety thousand, eight hundred six".