2099779903 has 8 divisors (see below), whose sum is σ = 2264040800. Its totient is φ = 1935910368.

The previous prime is 2099779901. The next prime is 2099779909. The reversal of 2099779903 is 3099779902.

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 2099779903 - 2¹ = 2099779901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099779901) 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, 86643 + ... + 108196.

It is an arithmetic number, because the mean of its divisors is an integer number (283005100).

Almost surely, 2^2099779903 is an apocalyptic number.

2099779903 is a deficient number, since it is larger than the sum of its proper divisors (164260897).

2099779903 is a wasteful number, since it uses less digits than its factorization.

2099779903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195681.

The product of its (nonzero) digits is 1928934, while the sum is 55.

The square root of 2099779903 is about 45823.3554314828. The cubic root of 2099779903 is about 1280.5344250701.

Subtracting 2099779903 from its reverse (3099779902), we obtain a palindrome (999999999).

The spelling of 2099779903 in words is "two billion, ninety-nine million, seven hundred seventy-nine thousand, nine hundred three".