2135839 has 4 divisors (see below), whose sum is σ = 2161656. Its totient is φ = 2110024.

The previous prime is 2135831. The next prime is 2135851. The reversal of 2135839 is 9385312.

It is a happy number.

2135839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2135839 - 2³ = 2135831 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2135839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12784 + ... + 12949.

It is an arithmetic number, because the mean of its divisors is an integer number (540414).

2^2135839 is an apocalyptic number.

2135839 is a deficient number, since it is larger than the sum of its proper divisors (25817).

2135839 is an equidigital number, since it uses as much as digits as its factorization.

2135839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25816.

The product of its digits is 6480, while the sum is 31.

The square root of 2135839 is about 1461.4509913097. The cubic root of 2135839 is about 128.7822981150.

The spelling of 2135839 in words is "two million, one hundred thirty-five thousand, eight hundred thirty-nine".