2040839906 has 24 divisors (see below), whose sum is σ = 3562962156. Its totient is φ = 874177920.

The previous prime is 2040839893. The next prime is 2040839917. The reversal of 2040839906 is 6099380402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1861145881 + 179694025 = 43141^2 + 13405^2 .

It is a Curzon 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, 228566 + ... + 237326.

Almost surely, 2^2040839906 is an apocalyptic number.

2040839906 is a deficient number, since it is larger than the sum of its proper divisors (1522122250).

2040839906 is a wasteful number, since it uses less digits than its factorization.

2040839906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11154 (or 11147 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 2040839906 is about 45175.6561214112. The cubic root of 2040839906 is about 1268.4391733228.

The spelling of 2040839906 in words is "two billion, forty million, eight hundred thirty-nine thousand, nine hundred six".