2099340 has 72 divisors (see below), whose sum is σ = 6486480. Its totient is φ = 549504.

The previous prime is 2099327. The next prime is 2099341. The reversal of 2099340 is 439902.

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 23 ways as a sum of consecutive naturals, for example, 19206 + ... + 19314.

It is an arithmetic number, because the mean of its divisors is an integer number (90090).

2^2099340 is an apocalyptic number.

2099340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2099340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3243240).

2099340 is an abundant number, since it is smaller than the sum of its proper divisors (4387140).

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

2099340 is a wasteful number, since it uses less digits than its factorization.

2099340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2099340 is about 1448.9099350891. The cubic root of 2099340 is about 128.0444995018.

The spelling of 2099340 in words is "two million, ninety-nine thousand, three hundred forty".