2009899 has 4 divisors (see below), whose sum is σ = 2019136. Its totient is φ = 2000664.

The previous prime is 2009897. The next prime is 2009911. The reversal of 2009899 is 9989002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9989002 = 2 ⋅4994501.

It is a cyclic number.

It is not a de Polignac number, because 2009899 - 2¹ = 2009897 is a prime.

It is a Duffinian number.

2009899 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2009897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4284 + ... + 4729.

It is an arithmetic number, because the mean of its divisors is an integer number (504784).

2^2009899 is an apocalyptic number.

2009899 is a deficient number, since it is larger than the sum of its proper divisors (9237).

2009899 is an equidigital number, since it uses as much as digits as its factorization.

2009899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 2009899 is about 1417.7090674747. The cubic root of 2009899 is about 126.1996289597.

The spelling of 2009899 in words is "two million, nine thousand, eight hundred ninety-nine".