2090389705 has 8 divisors (see below), whose sum is σ = 2509735752. Its totient is φ = 1671466368.

The previous prime is 2090389699. The next prime is 2090389727. The reversal of 2090389705 is 5079830902.

It is a happy number.

2090389705 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 79495056 + 2010894649 = 8916^2 + 44843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2090389705 - 2⁷ = 2090389577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94692 + ... + 114661.

It is an arithmetic number, because the mean of its divisors is an integer number (313716969).

Almost surely, 2^2090389705 is an apocalyptic number.

It is an amenable number.

2090389705 is a deficient number, since it is larger than the sum of its proper divisors (419346047).

2090389705 is a wasteful number, since it uses less digits than its factorization.

2090389705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211355.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 2090389705 is about 45720.7797943123. The cubic root of 2090389705 is about 1278.6227261517.

The spelling of 2090389705 in words is "two billion, ninety million, three hundred eighty-nine thousand, seven hundred five".