839059649 has 2 divisors, whose sum is σ = 839059650. Its totient is φ = 839059648.

The previous prime is 839059643. The next prime is 839059657. The reversal of 839059649 is 946950938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 739459249 + 99600400 = 27193^2 + 9980^2 .

It is a cyclic number.

It is not a de Polignac number, because 839059649 - 2⁸ = 839059393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 839059649.

It is not a weakly prime, because it can be changed into another prime (839059643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419529824 + 419529825.

It is an arithmetic number, because the mean of its divisors is an integer number (419529825).

Almost surely, 2^839059649 is an apocalyptic number.

It is an amenable number.

839059649 is a deficient number, since it is larger than the sum of its proper divisors (1).

839059649 is an equidigital number, since it uses as much as digits as its factorization.

839059649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 839059649 is about 28966.5263537070. The cubic root of 839059649 is about 943.1865782295.

The spelling of 839059649 in words is "eight hundred thirty-nine million, fifty-nine thousand, six hundred forty-nine".