849377057 has 2 divisors, whose sum is σ = 849377058. Its totient is φ = 849377056.

The previous prime is 849377003. The next prime is 849377059. The reversal of 849377057 is 750773948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673973521 + 175403536 = 25961^2 + 13244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849377057 is a prime.

Together with 849377059, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 849376996 and 849377014.

It is not a weakly prime, because it can be changed into another prime (849377059) 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, 424688528 + 424688529.

It is an arithmetic number, because the mean of its divisors is an integer number (424688529).

Almost surely, 2^849377057 is an apocalyptic number.

It is an amenable number.

849377057 is a deficient number, since it is larger than the sum of its proper divisors (1).

849377057 is an equidigital number, since it uses as much as digits as its factorization.

849377057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The square root of 849377057 is about 29144.0741318025. The cubic root of 849377057 is about 947.0367711737.

The spelling of 849377057 in words is "eight hundred forty-nine million, three hundred seventy-seven thousand, fifty-seven".