838139584441 has 2 divisors, whose sum is σ = 838139584442. Its totient is φ = 838139584440.

The previous prime is 838139584393. The next prime is 838139584537. The reversal of 838139584441 is 144485931838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 759120125625 + 79019458816 = 871275^2 + 281104^2 .

It is a cyclic number.

It is not a de Polignac number, because 838139584441 - 2¹¹ = 838139582393 is a prime.

It is not a weakly prime, because it can be changed into another prime (838139584241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419069792220 + 419069792221.

It is an arithmetic number, because the mean of its divisors is an integer number (419069792221).

Almost surely, 2^838139584441 is an apocalyptic number.

It is an amenable number.

838139584441 is a deficient number, since it is larger than the sum of its proper divisors (1).

838139584441 is an equidigital number, since it uses as much as digits as its factorization.

838139584441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13271040, while the sum is 58.

The spelling of 838139584441 in words is "eight hundred thirty-eight billion, one hundred thirty-nine million, five hundred eighty-four thousand, four hundred forty-one".