2199095905 has 4 divisors (see below), whose sum is σ = 2638915092. Its totient is φ = 1759276720.

The previous prime is 2199095893. The next prime is 2199095939. The reversal of 2199095905 is 5095909912.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 932874849 + 1266221056 = 30543^2 + 35584^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2199095905 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219909586 + ... + 219909595.

It is an arithmetic number, because the mean of its divisors is an integer number (659728773).

Almost surely, 2^2199095905 is an apocalyptic number.

It is an amenable number.

2199095905 is a deficient number, since it is larger than the sum of its proper divisors (439819187).

2199095905 is an equidigital number, since it uses as much as digits as its factorization.

2199095905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439819186.

The product of its (nonzero) digits is 328050, while the sum is 49.

The square root of 2199095905 is about 46894.5189227910. The cubic root of 2199095905 is about 1300.4132621037.

The spelling of 2199095905 in words is "two billion, one hundred ninety-nine million, ninety-five thousand, nine hundred five".