839542241 has 2 divisors, whose sum is σ = 839542242. Its totient is φ = 839542240.

The previous prime is 839542237. The next prime is 839542273. The reversal of 839542241 is 142245938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810597841 + 28944400 = 28471^2 + 5380^2 .

It is a cyclic number.

It is not a de Polignac number, because 839542241 - 2² = 839542237 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 839542195 and 839542204.

It is not a weakly prime, because it can be changed into another prime (839542441) 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, 419771120 + 419771121.

It is an arithmetic number, because the mean of its divisors is an integer number (419771121).

Almost surely, 2^839542241 is an apocalyptic number.

It is an amenable number.

839542241 is a deficient number, since it is larger than the sum of its proper divisors (1).

839542241 is an equidigital number, since it uses as much as digits as its factorization.

839542241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 839542241 is about 28974.8553231936. The cubic root of 839542241 is about 943.3673707233.

The spelling of 839542241 in words is "eight hundred thirty-nine million, five hundred forty-two thousand, two hundred forty-one".