5439985771 has 32 divisors (see below), whose sum is σ = 6487734528. Its totient is φ = 4505303040.

The previous prime is 5439985729. The next prime is 5439985799. The reversal of 5439985771 is 1775899345.

It is a cyclic number.

It is not a de Polignac number, because 5439985771 - 2⁹ = 5439985259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5439985711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 905640 + ... + 911626.

It is an arithmetic number, because the mean of its divisors is an integer number (202741704).

Almost surely, 2^5439985771 is an apocalyptic number.

5439985771 is a deficient number, since it is larger than the sum of its proper divisors (1047748757).

5439985771 is a wasteful number, since it uses less digits than its factorization.

5439985771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171.

The product of its digits is 9525600, while the sum is 58.

The square root of 5439985771 is about 73756.2591987961. The cubic root of 5439985771 is about 1758.7303354676.

The spelling of 5439985771 in words is "five billion, four hundred thirty-nine million, nine hundred eighty-five thousand, seven hundred seventy-one".