9090898990 has 16 divisors (see below), whose sum is σ = 16364704752. Its totient is φ = 3636118144.

The previous prime is 9090898969. The next prime is 9090898997. The reversal of 9090898990 is 998980909.

9090898990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090898997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272397 + ... + 303943.

It is an arithmetic number, because the mean of its divisors is an integer number (1022794047).

Almost surely, 2^9090898990 is an apocalyptic number.

9090898990 is a deficient number, since it is larger than the sum of its proper divisors (7273805762).

9090898990 is a wasteful number, since it uses less digits than its factorization.

9090898990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60371.

The product of its (nonzero) digits is 3779136, while the sum is 61.

The square root of 9090898990 is about 95346.2059549304. The cubic root of 9090898990 is about 2087.0632494440.

The spelling of 9090898990 in words is "nine billion, ninety million, eight hundred ninety-eight thousand, nine hundred ninety".