999000911 has 2 divisors, whose sum is σ = 999000912. Its totient is φ = 999000910.

The previous prime is 999000901. The next prime is 999000941. The reversal of 999000911 is 119000999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999000911 - 2²⁶ = 931892047 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999000901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499500455 + 499500456.

It is an arithmetic number, because the mean of its divisors is an integer number (499500456).

Almost surely, 2^999000911 is an apocalyptic number.

999000911 is a deficient number, since it is larger than the sum of its proper divisors (1).

999000911 is an equidigital number, since it uses as much as digits as its factorization.

999000911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 38.

The square root of 999000911 is about 31606.9756699372. The cubic root of 999000911 is about 999.6668593630. Note that the first 3 decimals are identical.

The spelling of 999000911 in words is "nine hundred ninety-nine million, nine hundred eleven", and thus it is an aban number.