849909937 has 2 divisors, whose sum is σ = 849909938. Its totient is φ = 849909936.

The previous prime is 849909847. The next prime is 849909947. The reversal of 849909937 is 739909948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 844716096 + 5193841 = 29064^2 + 2279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849909937 is a prime.

It is a super-2 number, since 2×849909937² = 1444693802022687938, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (849909947) 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, 424954968 + 424954969.

It is an arithmetic number, because the mean of its divisors is an integer number (424954969).

Almost surely, 2^849909937 is an apocalyptic number.

It is an amenable number.

849909937 is a deficient number, since it is larger than the sum of its proper divisors (1).

849909937 is an equidigital number, since it uses as much as digits as its factorization.

849909937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 849909937 is about 29153.2148656027. The cubic root of 849909937 is about 947.2347796045.

The spelling of 849909937 in words is "eight hundred forty-nine million, nine hundred nine thousand, nine hundred thirty-seven".