9850861 has 2 divisors, whose sum is σ = 9850862. Its totient is φ = 9850860.

The previous prime is 9850853. The next prime is 9850889. The reversal of 9850861 is 1680589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9030025 + 820836 = 3005^2 + 906^2 .

It is an emirp because it is prime and its reverse (1680589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9850861 - 2³ = 9850853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9850861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9850801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4925430 + 4925431.

It is an arithmetic number, because the mean of its divisors is an integer number (4925431).

Almost surely, 2^9850861 is an apocalyptic number.

It is an amenable number.

9850861 is a deficient number, since it is larger than the sum of its proper divisors (1).

9850861 is an equidigital number, since it uses as much as digits as its factorization.

9850861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 9850861 is about 3138.6081310033. The cubic root of 9850861 is about 214.3670658948.

The spelling of 9850861 in words is "nine million, eight hundred fifty thousand, eight hundred sixty-one".