4449081939697 has 2 divisors, whose sum is σ = 4449081939698. Its totient is φ = 4449081939696.

The previous prime is 4449081939677. The next prime is 4449081939703. The reversal of 4449081939697 is 7969391809444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4448319682816 + 762256881 = 2109104^2 + 27609^2 .

It is a cyclic number.

It is not a de Polignac number, because 4449081939697 - 2³¹ = 4446934456049 is a prime.

It is a super-2 number, since 2×4449081939697² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4449081939677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2224540969848 + 2224540969849.

It is an arithmetic number, because the mean of its divisors is an integer number (2224540969849).

Almost surely, 2^{4449081939697} is an apocalyptic number.

It is an amenable number.

4449081939697 is a deficient number, since it is larger than the sum of its proper divisors (1).

4449081939697 is an equidigital number, since it uses as much as digits as its factorization.

4449081939697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423263232, while the sum is 73.

The spelling of 4449081939697 in words is "four trillion, four hundred forty-nine billion, eighty-one million, nine hundred thirty-nine thousand, six hundred ninety-seven".