9090856 has 8 divisors (see below), whose sum is σ = 17045370. Its totient is φ = 4545424.

The previous prime is 9090853. The next prime is 9090857. The reversal of 9090856 is 6580909.

It can be written as a sum of positive squares in only one way, i.e., 4553956 + 4536900 = 2134^2 + 2130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (9090853) 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 as a sum of consecutive naturals, namely, 568171 + ... + 568186.

Almost surely, 2^9090856 is an apocalyptic number.

It is an amenable number.

9090856 is a deficient number, since it is larger than the sum of its proper divisors (7954514).

9090856 is a wasteful number, since it uses less digits than its factorization.

9090856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136363 (or 1136359 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 9090856 is about 3015.1046416335. The cubic root of 9090856 is about 208.7059959597.

The spelling of 9090856 in words is "nine million, ninety thousand, eight hundred fifty-six".