2099149 has 6 divisors (see below), whose sum is σ = 2273226. Its totient is φ = 1937520.

The previous prime is 2099147. The next prime is 2099179. The reversal of 2099149 is 9419902.

It can be written as a sum of positive squares in 3 ways, for example, as 189225 + 1909924 = 435^2 + 1382^2 .

It is not a de Polignac number, because 2099149 - 2¹ = 2099147 is a prime.

It is a Duffinian number.

2099149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099147) 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, 6042 + ... + 6379.

It is an arithmetic number, because the mean of its divisors is an integer number (378871).

2^2099149 is an apocalyptic number.

It is an amenable number.

2099149 is a deficient number, since it is larger than the sum of its proper divisors (174077).

2099149 is a wasteful number, since it uses less digits than its factorization.

2099149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12447 (or 12434 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 2099149 is about 1448.8440219706. The cubic root of 2099149 is about 128.0406161796.

The spelling of 2099149 in words is "two million, ninety-nine thousand, one hundred forty-nine".