2099490 has 32 divisors (see below), whose sum is σ = 5149440. Its totient is φ = 547584.

The previous prime is 2099479. The next prime is 2099497. The reversal of 2099490 is 949902.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2099497) 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 15 ways as a sum of consecutive naturals, for example, 666 + ... + 2154.

It is an arithmetic number, because the mean of its divisors is an integer number (160920).

2^2099490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2099490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2574720).

2099490 is an abundant number, since it is smaller than the sum of its proper divisors (3049950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2099490 is a wasteful number, since it uses less digits than its factorization.

2099490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 2099490 is about 1448.9616972163. The cubic root of 2099490 is about 128.0475490662.

The spelling of 2099490 in words is "two million, ninety-nine thousand, four hundred ninety".