849090559 has 2 divisors, whose sum is σ = 849090560. Its totient is φ = 849090558.

The previous prime is 849090553. The next prime is 849090587. The reversal of 849090559 is 955090948.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849090559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849090553) 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, 424545279 + 424545280.

It is an arithmetic number, because the mean of its divisors is an integer number (424545280).

Almost surely, 2^849090559 is an apocalyptic number.

849090559 is a deficient number, since it is larger than the sum of its proper divisors (1).

849090559 is an equidigital number, since it uses as much as digits as its factorization.

849090559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 49.

The square root of 849090559 is about 29139.1585156469. The cubic root of 849090559 is about 946.9302795394.

The spelling of 849090559 in words is "eight hundred forty-nine million, ninety thousand, five hundred fifty-nine".