990190122 has 8 divisors (see below), whose sum is σ = 1980380256. Its totient is φ = 330063372.

The previous prime is 990190121. The next prime is 990190133. The reversal of 990190122 is 221091099.

It is a sphenic number, since it is the product of 3 distinct primes.

990190122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (990190121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82515838 + ... + 82515849.

It is an arithmetic number, because the mean of its divisors is an integer number (247547532).

Almost surely, 2^990190122 is an apocalyptic number.

990190122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990190122 is a wasteful number, since it uses less digits than its factorization.

990190122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165031692.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 990190122 is about 31467.2865369736. The cubic root of 990190122 is about 996.7192893746.

The spelling of 990190122 in words is "nine hundred ninety million, one hundred ninety thousand, one hundred twenty-two".