4146441721 has 4 divisors (see below), whose sum is σ = 4289422500. Its totient is φ = 4003460944.

The previous prime is 4146441709. The next prime is 4146441751. The reversal of 4146441721 is 1271446414.

4146441721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1456567225 + 2689874496 = 38165^2 + 51864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4146441721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4146441751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71490346 + ... + 71490403.

It is an arithmetic number, because the mean of its divisors is an integer number (1072355625).

Almost surely, 2^4146441721 is an apocalyptic number.

It is an amenable number.

4146441721 is a deficient number, since it is larger than the sum of its proper divisors (142980779).

4146441721 is a wasteful number, since it uses less digits than its factorization.

4146441721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142980778.

The product of its digits is 21504, while the sum is 34.

The square root of 4146441721 is about 64392.8701099741. The cubic root of 4146441721 is about 1606.5411542927.

The spelling of 4146441721 in words is "four billion, one hundred forty-six million, four hundred forty-one thousand, seven hundred twenty-one".