2085555439 has 16 divisors (see below), whose sum is σ = 2290882176. Its totient is φ = 1882893600.

The previous prime is 2085555401. The next prime is 2085555443. The reversal of 2085555439 is 9345555802.

It is a cyclic number.

It is not a de Polignac number, because 2085555439 - 2¹¹ = 2085553391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085555449) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1756404 + ... + 1757590.

It is an arithmetic number, because the mean of its divisors is an integer number (143180136).

Almost surely, 2^2085555439 is an apocalyptic number.

2085555439 is a deficient number, since it is larger than the sum of its proper divisors (205326737).

2085555439 is a wasteful number, since it uses less digits than its factorization.

2085555439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The square root of 2085555439 is about 45667.8819193533. The cubic root of 2085555439 is about 1277.6363114493.

The spelling of 2085555439 in words is "two billion, eighty-five million, five hundred fifty-five thousand, four hundred thirty-nine".