2040839 has 4 divisors (see below), whose sum is σ = 2043720. Its totient is φ = 2037960.

The previous prime is 2040827. The next prime is 2040851. The reversal of 2040839 is 9380402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (2040827) and next prime (2040851).

It is a cyclic number.

It is not a de Polignac number, because 2040839 - 2²⁰ = 992263 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 (2040539) 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, 449 + ... + 2069.

It is an arithmetic number, because the mean of its divisors is an integer number (510930).

2^2040839 is an apocalyptic number.

2040839 is a deficient number, since it is larger than the sum of its proper divisors (2881).

2040839 is a wasteful number, since it uses less digits than its factorization.

2040839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2040839 is about 1428.5793642637. The cubic root of 2040839 is about 126.8438985621.

The spelling of 2040839 in words is "two million, forty thousand, eight hundred thirty-nine".