2011709899 has 4 divisors (see below), whose sum is σ = 2012995264. Its totient is φ = 2010424536.

The previous prime is 2011709891. The next prime is 2011709929. The reversal of 2011709899 is 9989071102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011709899 - 2³ = 2011709891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011709891) 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 3 ways as a sum of consecutive naturals, for example, 640332 + ... + 643465.

It is an arithmetic number, because the mean of its divisors is an integer number (503248816).

Almost surely, 2^2011709899 is an apocalyptic number.

2011709899 is a deficient number, since it is larger than the sum of its proper divisors (1285365).

2011709899 is a wasteful number, since it uses less digits than its factorization.

2011709899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285364.

The product of its (nonzero) digits is 81648, while the sum is 46.

The square root of 2011709899 is about 44852.0891263718. The cubic root of 2011709899 is about 1262.3751911911.

The spelling of 2011709899 in words is "two billion, eleven million, seven hundred nine thousand, eight hundred ninety-nine".