999810011 has 2 divisors, whose sum is σ = 999810012. Its totient is φ = 999810010.

The previous prime is 999809999. The next prime is 999810067. The reversal of 999810011 is 110018999.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (110018999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999810011 - 2¹⁸ = 999547867 is a prime.

It is a Chen prime.

It is equal to p_50838347 and since 999810011 and 50838347 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (999810311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499905005 + 499905006.

It is an arithmetic number, because the mean of its divisors is an integer number (499905006).

Almost surely, 2^999810011 is an apocalyptic number.

999810011 is a deficient number, since it is larger than the sum of its proper divisors (1).

999810011 is an equidigital number, since it uses as much as digits as its factorization.

999810011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 38.

The square root of 999810011 is about 31619.7724691371. The cubic root of 999810011 is about 999.9366663223.

The spelling of 999810011 in words is "nine hundred ninety-nine million, eight hundred ten thousand, eleven".