2099345 has 8 divisors (see below), whose sum is σ = 2529576. Its totient is φ = 1672576.

The previous prime is 2099341. The next prime is 2099359. The reversal of 2099345 is 5439902.

It can be written as a sum of positive squares in 4 ways, for example, as 1032256 + 1067089 = 1016^2 + 1033^2 .

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 2099345 - 2² = 2099341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2099341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (316197).

2^2099345 is an apocalyptic number.

It is an amenable number.

2099345 is a deficient number, since it is larger than the sum of its proper divisors (430231).

2099345 is a wasteful number, since it uses less digits than its factorization.

2099345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2099345 is about 1448.9116605232. The cubic root of 2099345 is about 128.0446011563.

The spelling of 2099345 in words is "two million, ninety-nine thousand, three hundred forty-five".