2170391099 has 6 divisors (see below), whose sum is σ = 2203273044. Its totient is φ = 2137992780.

The previous prime is 2170391081. The next prime is 2170391183. The reversal of 2170391099 is 9901930712.

It is a de Polignac number, because none of the positive numbers 2^k-2170391099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170391009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 237257 + ... + 246234.

It is an arithmetic number, because the mean of its divisors is an integer number (367212174).

Almost surely, 2^2170391099 is an apocalyptic number.

2170391099 is a deficient number, since it is larger than the sum of its proper divisors (32881945).

2170391099 is an frugal number, since it uses more digits than its factorization.

2170391099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483625 (or 483558 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 2170391099 is about 46587.4564555740. The cubic root of 2170391099 is about 1294.7303641004.

The spelling of 2170391099 in words is "two billion, one hundred seventy million, three hundred ninety-one thousand, ninety-nine".