2099949 has 8 divisors (see below), whose sum is σ = 2806752. Its totient is φ = 1396560.

The previous prime is 2099941. The next prime is 2099963. The reversal of 2099949 is 9499902.

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

It is not a de Polignac number, because 2099949 - 2³ = 2099941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2099949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099941) 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, 1567 + ... + 2579.

It is an arithmetic number, because the mean of its divisors is an integer number (350844).

2^2099949 is an apocalyptic number.

It is an amenable number.

2099949 is a deficient number, since it is larger than the sum of its proper divisors (706803).

2099949 is a wasteful number, since it uses less digits than its factorization.

2099949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 2099949 is about 1449.1200778403. The cubic root of 2099949 is about 128.0568798310.

The spelling of 2099949 in words is "two million, ninety-nine thousand, nine hundred forty-nine".