999900011 has 8 divisors (see below), whose sum is σ = 1091458800. Its totient is φ = 908451040.

The previous prime is 999899987. The next prime is 999900017. The reversal of 999900011 is 110009999.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 999900011 - 2¹⁴ = 999883627 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 (999900017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7796 + ... + 45393.

It is an arithmetic number, because the mean of its divisors is an integer number (136432350).

Almost surely, 2^999900011 is an apocalyptic number.

999900011 is a deficient number, since it is larger than the sum of its proper divisors (91558789).

999900011 is a wasteful number, since it uses less digits than its factorization.

999900011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54909.

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

The square root of 999900011 is about 31621.1955972572. The cubic root of 999900011 is about 999.9666692224.

It can be divided in two parts, 99 and 9900011, that multiplied together give a palindrome (980101089).

The spelling of 999900011 in words is "nine hundred ninety-nine million, nine hundred thousand, eleven".