2099790 has 128 divisors (see below), whose sum is σ = 7050240. Its totient is φ = 432000.

The previous prime is 2099771. The next prime is 2099809. The reversal of 2099790 is 979902.

It is an interprime number because it is at equal distance from previous prime (2099771) and next prime (2099809).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 20740 + ... + 20840.

It is an arithmetic number, because the mean of its divisors is an integer number (55080).

2^2099790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2099790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3525120).

2099790 is an abundant number, since it is smaller than the sum of its proper divisors (4950450).

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

2099790 is a wasteful number, since it uses less digits than its factorization.

2099790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 2099790 is about 1449.0652159237. The cubic root of 2099790 is about 128.0536477592.

It can be divided in two parts, 209 and 9790, that added together give a palindrome (9999).

The spelling of 2099790 in words is "two million, ninety-nine thousand, seven hundred ninety".