2099640008 has 32 divisors (see below), whose sum is σ = 4175357760. Its totient is φ = 987708480.

The previous prime is 2099640007. The next prime is 2099640017. The reversal of 2099640008 is 8000469902.

It is not an unprimeable number, because it can be changed into a prime (2099640007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82310 + ... + 104757.

It is an arithmetic number, because the mean of its divisors is an integer number (130479930).

Almost surely, 2^2099640008 is an apocalyptic number.

It is an amenable number.

2099640008 is a deficient number, since it is larger than the sum of its proper divisors (2075717752).

2099640008 is a wasteful number, since it uses less digits than its factorization.

2099640008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187157 (or 187153 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2099640008 is about 45821.8289464748. The cubic root of 2099640008 is about 1280.5059864796.

The spelling of 2099640008 in words is "two billion, ninety-nine million, six hundred forty thousand, eight".