2044039805 has 6 divisors (see below), whose sum is σ = 2452969086. Its totient is φ = 1635150968.

The previous prime is 2044039783. The next prime is 2044039849. The reversal of 2044039805 is 5089304402.

It can be written as a sum of positive squares in only one way, i.e., 1635231844 + 408807961 = 40438^2 + 20219^2 .

It is not a de Polignac number, because 2044039805 - 2⁸ = 2044039549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90986 + ... + 111204.

It is an arithmetic number, because the mean of its divisors is an integer number (408828181).

Almost surely, 2^2044039805 is an apocalyptic number.

It is an amenable number.

2044039805 is a deficient number, since it is larger than the sum of its proper divisors (408929281).

2044039805 is an frugal number, since it uses more digits than its factorization.

2044039805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40443 (or 20224 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 2044039805 is about 45211.0584370682. The cubic root of 2044039805 is about 1269.1017694314.

The spelling of 2044039805 in words is "two billion, forty-four million, thirty-nine thousand, eight hundred five".