4144241921 has 2 divisors, whose sum is σ = 4144241922. Its totient is φ = 4144241920.

The previous prime is 4144241809. The next prime is 4144241953. The reversal of 4144241921 is 1291424414.

It is an a-pointer prime, because the next prime (4144241953) can be obtained adding 4144241921 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2794708225 + 1349533696 = 52865^2 + 36736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4144241921 is a prime.

It is not a weakly prime, because it can be changed into another prime (4144241971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072120960 + 2072120961.

It is an arithmetic number, because the mean of its divisors is an integer number (2072120961).

Almost surely, 2^4144241921 is an apocalyptic number.

It is an amenable number.

4144241921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4144241921 is an equidigital number, since it uses as much as digits as its factorization.

4144241921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 4144241921 is about 64375.7867602408. The cubic root of 4144241921 is about 1606.2569994578.

The spelling of 4144241921 in words is "four billion, one hundred forty-four million, two hundred forty-one thousand, nine hundred twenty-one".