990202099 has 4 divisors (see below), whose sum is σ = 990269280. Its totient is φ = 990134920.

The previous prime is 990202097. The next prime is 990202159.

990202099 is nontrivially palindromic in base 10.

990202099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 990202099 - 2¹ = 990202097 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990202091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832 + ... + 44509.

It is an arithmetic number, because the mean of its divisors is an integer number (247567320).

Almost surely, 2^990202099 is an apocalyptic number.

990202099 is a deficient number, since it is larger than the sum of its proper divisors (67181).

990202099 is a wasteful number, since it uses less digits than its factorization.

990202099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67180.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 990202099 is about 31467.4768451492. The cubic root of 990202099 is about 996.7233080166.

The spelling of 990202099 in words is "nine hundred ninety million, two hundred two thousand, ninety-nine".