9869863 has 2 divisors, whose sum is σ = 9869864. Its totient is φ = 9869862.

The previous prime is 9869857. The next prime is 9869869. The reversal of 9869863 is 3689689.

9869863 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (9869857) and next prime (9869869).

It is an emirp because it is prime and its reverse (3689689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9869863 - 2¹⁷ = 9738791 is a prime.

9869863 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9869869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4934931 + 4934932.

It is an arithmetic number, because the mean of its divisors is an integer number (4934932).

Almost surely, 2^9869863 is an apocalyptic number.

9869863 is a deficient number, since it is larger than the sum of its proper divisors (1).

9869863 is an equidigital number, since it uses as much as digits as its factorization.

9869863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 49.

The square root of 9869863 is about 3141.6338106151. The cubic root of 9869863 is about 214.5048131311.

The spelling of 9869863 in words is "nine million, eight hundred sixty-nine thousand, eight hundred sixty-three".