849940589 has 2 divisors, whose sum is σ = 849940590. Its totient is φ = 849940588.

The previous prime is 849940583. The next prime is 849940601. The reversal of 849940589 is 985049948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 849722500 + 218089 = 29150^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 849940589 - 2¹⁶ = 849875053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849940583) 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, 424970294 + 424970295.

It is an arithmetic number, because the mean of its divisors is an integer number (424970295).

Almost surely, 2^849940589 is an apocalyptic number.

It is an amenable number.

849940589 is a deficient number, since it is larger than the sum of its proper divisors (1).

849940589 is an equidigital number, since it uses as much as digits as its factorization.

849940589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The square root of 849940589 is about 29153.7405661778. The cubic root of 849940589 is about 947.2461668077.

The spelling of 849940589 in words is "eight hundred forty-nine million, nine hundred forty thousand, five hundred eighty-nine".