8489963873 has 2 divisors, whose sum is σ = 8489963874. Its totient is φ = 8489963872.

The previous prime is 8489963861. The next prime is 8489963921. The reversal of 8489963873 is 3783699848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7452350929 + 1037612944 = 86327^2 + 32212^2 .

It is a cyclic number.

It is not a de Polignac number, because 8489963873 - 2¹⁴ = 8489947489 is a prime.

It is not a weakly prime, because it can be changed into another prime (8489363873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4244981936 + 4244981937.

It is an arithmetic number, because the mean of its divisors is an integer number (4244981937).

Almost surely, 2^8489963873 is an apocalyptic number.

It is an amenable number.

8489963873 is a deficient number, since it is larger than the sum of its proper divisors (1).

8489963873 is an equidigital number, since it uses as much as digits as its factorization.

8489963873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62705664, while the sum is 65.

The square root of 8489963873 is about 92140.9999565883. Note that the first 4 decimals coincide. The cubic root of 8489963873 is about 2040.0240187644.

The spelling of 8489963873 in words is "eight billion, four hundred eighty-nine million, nine hundred sixty-three thousand, eight hundred seventy-three".