999000841 has 2 divisors, whose sum is σ = 999000842. Its totient is φ = 999000840.

The previous prime is 999000817. The next prime is 999000901. The reversal of 999000841 is 148000999.

999000841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 581002816 + 417998025 = 24104^2 + 20445^2 .

It is a cyclic number.

It is not a de Polignac number, because 999000841 - 2⁵ = 999000809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999000794 and 999000803.

It is not a weakly prime, because it can be changed into another prime (999000341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499500420 + 499500421.

It is an arithmetic number, because the mean of its divisors is an integer number (499500421).

Almost surely, 2^999000841 is an apocalyptic number.

It is an amenable number.

999000841 is a deficient number, since it is larger than the sum of its proper divisors (1).

999000841 is an equidigital number, since it uses as much as digits as its factorization.

999000841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 999000841 is about 31606.9745625867. The cubic root of 999000841 is about 999.6668360141. Note that the first 3 decimals are identical.

The spelling of 999000841 in words is "nine hundred ninety-nine million, eight hundred forty-one", and thus it is an aban number.