2099444123 has 4 divisors (see below), whose sum is σ = 2399364720. Its totient is φ = 1799523528.

The previous prime is 2099444119. The next prime is 2099444131. The reversal of 2099444123 is 3214449902.

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 2099444123 - 2² = 2099444119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099444153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149960288 + ... + 149960301.

It is an arithmetic number, because the mean of its divisors is an integer number (599841180).

Almost surely, 2^2099444123 is an apocalyptic number.

2099444123 is a deficient number, since it is larger than the sum of its proper divisors (299920597).

2099444123 is an equidigital number, since it uses as much as digits as its factorization.

2099444123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299920596.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 2099444123 is about 45819.6914328327. The cubic root of 2099444123 is about 1280.4661638251.

The spelling of 2099444123 in words is "two billion, ninety-nine million, four hundred forty-four thousand, one hundred twenty-three".