2099161 has 8 divisors (see below), whose sum is σ = 2183040. Its totient is φ = 2017008.

The previous prime is 2099147. The next prime is 2099179. The reversal of 2099161 is 1619902.

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 2099161 - 2⁵ = 2099129 is a prime.

It is a Duffinian number.

2099161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2099191) 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, 2395 + ... + 3151.

It is an arithmetic number, because the mean of its divisors is an integer number (272880).

2^2099161 is an apocalyptic number.

It is an amenable number.

2099161 is a deficient number, since it is larger than the sum of its proper divisors (83879).

2099161 is an equidigital number, since it uses as much as digits as its factorization.

2099161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 2099161 is about 1448.8481631972. The cubic root of 2099161 is about 128.0408601649.

The spelling of 2099161 in words is "two million, ninety-nine thousand, one hundred sixty-one".