4989863 has 2 divisors, whose sum is σ = 4989864. Its totient is φ = 4989862.

The previous prime is 4989851. The next prime is 4989917. The reversal of 4989863 is 3689894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4989863 - 2⁴ = 4989847 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4989463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494931 + 2494932.

It is an arithmetic number, because the mean of its divisors is an integer number (2494932).

Almost surely, 2^4989863 is an apocalyptic number.

4989863 is a deficient number, since it is larger than the sum of its proper divisors (1).

4989863 is an equidigital number, since it uses as much as digits as its factorization.

4989863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 47.

The square root of 4989863 is about 2233.8001253469. The cubic root of 4989863 is about 170.8819563095.

The spelling of 4989863 in words is "four million, nine hundred eighty-nine thousand, eight hundred sixty-three".