2099099 has 4 divisors (see below), whose sum is σ = 2108736. Its totient is φ = 2089464.

The previous prime is 2099093. The next prime is 2099129. The reversal of 2099099 is 9909902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9909902 = 2 ⋅4954951.

It is a cyclic number.

It is not a de Polignac number, because 2099099 - 2²⁰ = 1050523 is a prime.

It is a super-2 number, since 2×2099099² = 8812433223602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4484 + ... + 4929.

It is an arithmetic number, because the mean of its divisors is an integer number (527184).

2^2099099 is an apocalyptic number.

2099099 is a deficient number, since it is larger than the sum of its proper divisors (9637).

2099099 is an equidigital number, since it uses as much as digits as its factorization.

2099099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9636.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 2099099 is about 1448.8267667323. The cubic root of 2099099 is about 128.0395995642.

The spelling of 2099099 in words is "two million, ninety-nine thousand, ninety-nine".