4144834921 has 2 divisors, whose sum is σ = 4144834922. Its totient is φ = 4144834920.

The previous prime is 4144834909. The next prime is 4144834951. The reversal of 4144834921 is 1294384414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3786679296 + 358155625 = 61536^2 + 18925^2 .

It is a cyclic number.

It is not a de Polignac number, because 4144834921 - 2⁹ = 4144834409 is a prime.

It is not a weakly prime, because it can be changed into another prime (4144834951) 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, 2072417460 + 2072417461.

It is an arithmetic number, because the mean of its divisors is an integer number (2072417461).

Almost surely, 2^4144834921 is an apocalyptic number.

It is an amenable number.

4144834921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4144834921 is an equidigital number, since it uses as much as digits as its factorization.

4144834921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 40.

The square root of 4144834921 is about 64380.3923644459. The cubic root of 4144834921 is about 1606.3336089633. Note that the first 3 decimals are identical.

The spelling of 4144834921 in words is "four billion, one hundred forty-four million, eight hundred thirty-four thousand, nine hundred twenty-one".