2099239 has 4 divisors (see below), whose sum is σ = 2109400. Its totient is φ = 2089080.

The previous prime is 2099221. The next prime is 2099249. The reversal of 2099239 is 9329902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9329902 = 2 ⋅4664951.

It is a cyclic number.

It is not a de Polignac number, because 2099239 - 2²¹ = 2087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4764 + ... + 5185.

It is an arithmetic number, because the mean of its divisors is an integer number (527350).

2^2099239 is an apocalyptic number.

2099239 is a deficient number, since it is larger than the sum of its proper divisors (10161).

2099239 is an equidigital number, since it uses as much as digits as its factorization.

2099239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10160.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 2099239 is about 1448.8750808817. The cubic root of 2099239 is about 128.0424460466.

The spelling of 2099239 in words is "two million, ninety-nine thousand, two hundred thirty-nine".