990000099 has 18 divisors (see below), whose sum is σ = 1571820068. Its totient is φ = 599999400.

The previous prime is 990000071. The next prime is 990000131.

990000099 is nontrivially palindromic in base 10.

990000099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 990000099 - 2¹⁹ = 989475811 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (990000029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 453457 + ... + 455634.

Almost surely, 2^990000099 is an apocalyptic number.

990000099 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

990000099 is a deficient number, since it is larger than the sum of its proper divisors (581819969).

990000099 is a wasteful number, since it uses less digits than its factorization.

990000099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909119 (or 909105 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 990000099 is about 31464.2670183178. The cubic root of 990000099 is about 996.6555266344.

It can be divided in two parts, 9900000 and 99, that added together give a palindrome (9900099).

The spelling of 990000099 in words is "nine hundred ninety million, ninety-nine", and thus it is an aban number.