8471662489 has 2 divisors, whose sum is σ = 8471662490. Its totient is φ = 8471662488.

The previous prime is 8471662481. The next prime is 8471662499. The reversal of 8471662489 is 9842661748.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7361640000 + 1110022489 = 85800^2 + 33317^2 .

It is a cyclic number.

It is not a de Polignac number, because 8471662489 - 2³ = 8471662481 is a prime.

It is not a weakly prime, because it can be changed into another prime (8471662481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4235831244 + 4235831245.

It is an arithmetic number, because the mean of its divisors is an integer number (4235831245).

Almost surely, 2^8471662489 is an apocalyptic number.

It is an amenable number.

8471662489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8471662489 is an equidigital number, since it uses as much as digits as its factorization.

8471662489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 55.

The square root of 8471662489 is about 92041.6345411141. The cubic root of 8471662489 is about 2038.5571054805.

The spelling of 8471662489 in words is "eight billion, four hundred seventy-one million, six hundred sixty-two thousand, four hundred eighty-nine".