2099770 has 8 divisors (see below), whose sum is σ = 3779604. Its totient is φ = 839904.

The previous prime is 2099767. The next prime is 2099771. The reversal of 2099770 is 779902.

It can be written as a sum of positive squares in 2 ways, for example, as 2099601 + 169 = 1449^2 + 13^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2099771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104979 + ... + 104998.

2^2099770 is an apocalyptic number.

2099770 is a deficient number, since it is larger than the sum of its proper divisors (1679834).

2099770 is a wasteful number, since it uses less digits than its factorization.

2099770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209984.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 2099770 is about 1449.0583149066. The cubic root of 2099770 is about 128.0532411978.

The spelling of 2099770 in words is "two million, ninety-nine thousand, seven hundred seventy".