4400141821 has 2 divisors, whose sum is σ = 4400141822. Its totient is φ = 4400141820.

The previous prime is 4400141819. The next prime is 4400141827. The reversal of 4400141821 is 1281410044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4318329796 + 81812025 = 65714^2 + 9045^2 .

It is a cyclic number.

It is not a de Polignac number, because 4400141821 - 2¹ = 4400141819 is a prime.

It is a super-2 number, since 2×4400141821² = 38722496089826392082, which contains 22 as substring.

Together with 4400141819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4400141827) 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 as a sum of consecutive naturals, namely, 2200070910 + 2200070911.

It is an arithmetic number, because the mean of its divisors is an integer number (2200070911).

Almost surely, 2^4400141821 is an apocalyptic number.

It is an amenable number.

4400141821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4400141821 is an equidigital number, since it uses as much as digits as its factorization.

4400141821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 4400141821 is about 66333.5648145040. The cubic root of 4400141821 is about 1638.6601466124.

Adding to 4400141821 its reverse (1281410044), we get a palindrome (5681551865).

The spelling of 4400141821 in words is "four billion, four hundred million, one hundred forty-one thousand, eight hundred twenty-one".