990989099 has 8 divisors (see below), whose sum is σ = 1044218880. Its totient is φ = 937866600.

The previous prime is 990989057. The next prime is 990989117.

990989099 is nontrivially palindromic in base 10.

990989099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-990989099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990989039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7487 + ... + 45144.

It is an arithmetic number, because the mean of its divisors is an integer number (130527360).

Almost surely, 2^990989099 is an apocalyptic number.

990989099 is a deficient number, since it is larger than the sum of its proper divisors (53229781).

990989099 is a wasteful number, since it uses less digits than its factorization.

990989099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53641.

The product of its (nonzero) digits is 4251528, while the sum is 62.

The square root of 990989099 is about 31479.9793360796. The cubic root of 990989099 is about 996.9872990813.

The spelling of 990989099 in words is "nine hundred ninety million, nine hundred eighty-nine thousand, ninety-nine".