849780559 has 2 divisors, whose sum is σ = 849780560. Its totient is φ = 849780558.

The previous prime is 849780557. The next prime is 849780647. The reversal of 849780559 is 955087948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 849780559 - 2¹ = 849780557 is a prime.

Together with 849780557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849780557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424890279 + 424890280.

It is an arithmetic number, because the mean of its divisors is an integer number (424890280).

Almost surely, 2^849780559 is an apocalyptic number.

849780559 is a deficient number, since it is larger than the sum of its proper divisors (1).

849780559 is an equidigital number, since it uses as much as digits as its factorization.

849780559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The square root of 849780559 is about 29150.9958491987. The cubic root of 849780559 is about 947.1867127231.

The spelling of 849780559 in words is "eight hundred forty-nine million, seven hundred eighty thousand, five hundred fifty-nine".