2099847 has 16 divisors (see below), whose sum is σ = 2941952. Its totient is φ = 1330560.

The previous prime is 2099837. The next prime is 2099863. The reversal of 2099847 is 7489902.

It is a de Polignac number, because none of the positive numbers 2^k-2099847 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁷ + 0 + 9² + 9² + 8⁷ + 4 + 7⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099827) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6063 + ... + 6399.

It is an arithmetic number, because the mean of its divisors is an integer number (183872).

2^2099847 is an apocalyptic number.

2099847 is a deficient number, since it is larger than the sum of its proper divisors (842105).

2099847 is a wasteful number, since it uses less digits than its factorization.

2099847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 2099847 is about 1449.0848836421. The cubic root of 2099847 is about 128.0548064452.

The spelling of 2099847 in words is "two million, ninety-nine thousand, eight hundred forty-seven".