4105927721 has 16 divisors (see below), whose sum is σ = 4953202560. Its totient is φ = 3334097808.

The previous prime is 4105927697. The next prime is 4105927723. The reversal of 4105927721 is 1277295014.

It is a happy number.

It is not a de Polignac number, because 4105927721 - 2¹⁰ = 4105926697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4105927723) 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, 5255 + ... + 90771.

It is an arithmetic number, because the mean of its divisors is an integer number (309575160).

Almost surely, 2^4105927721 is an apocalyptic number.

It is an amenable number.

4105927721 is a deficient number, since it is larger than the sum of its proper divisors (847274839).

4105927721 is an frugal number, since it uses more digits than its factorization.

4105927721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85581 (or 85543 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 4105927721 is about 64077.5133802803. The cubic root of 4105927721 is about 1601.2916290337.

The spelling of 4105927721 in words is "four billion, one hundred five million, nine hundred twenty-seven thousand, seven hundred twenty-one".