9805897 has 2 divisors, whose sum is σ = 9805898. Its totient is φ = 9805896.

The previous prime is 9805891. The next prime is 9805903. The reversal of 9805897 is 7985089.

It is a balanced prime because it is at equal distance from previous prime (9805891) and next prime (9805903).

It can be written as a sum of positive squares in only one way, i.e., 6230016 + 3575881 = 2496^2 + 1891^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9805897 is a prime.

It is not a weakly prime, because it can be changed into another prime (9805891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4902948 + 4902949.

It is an arithmetic number, because the mean of its divisors is an integer number (4902949).

Almost surely, 2^9805897 is an apocalyptic number.

It is an amenable number.

9805897 is a deficient number, since it is larger than the sum of its proper divisors (1).

9805897 is an equidigital number, since it uses as much as digits as its factorization.

9805897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 9805897 is about 3131.4368906302. The cubic root of 9805897 is about 214.0404107457.

The spelling of 9805897 in words is "nine million, eight hundred five thousand, eight hundred ninety-seven".