2099988 has 36 divisors (see below), whose sum is σ = 5791968. Its totient is φ = 636240.

The previous prime is 2099963. The next prime is 2100001. The reversal of 2099988 is 8899902.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2256 + ... + 3047.

It is an arithmetic number, because the mean of its divisors is an integer number (160888).

2^2099988 is an apocalyptic number.

It is an amenable number.

2099988 is an abundant number, since it is smaller than the sum of its proper divisors (3691980).

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

2099988 is a wasteful number, since it uses less digits than its factorization.

2099988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324 (or 5319 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 2099988 is about 1449.1335342197. The cubic root of 2099988 is about 128.0576725784.

The spelling of 2099988 in words is "two million, ninety-nine thousand, nine hundred eighty-eight".