8646489443 has 2 divisors, whose sum is σ = 8646489444. Its totient is φ = 8646489442.

The previous prime is 8646489437. The next prime is 8646489497. The reversal of 8646489443 is 3449846468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8646489443 - 2¹⁰ = 8646488419 is a prime.

It is not a weakly prime, because it can be changed into another prime (8646489433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4323244721 + 4323244722.

It is an arithmetic number, because the mean of its divisors is an integer number (4323244722).

Almost surely, 2^8646489443 is an apocalyptic number.

8646489443 is a deficient number, since it is larger than the sum of its proper divisors (1).

8646489443 is an equidigital number, since it uses as much as digits as its factorization.

8646489443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15925248, while the sum is 56.

The square root of 8646489443 is about 92986.5014020852. The cubic root of 8646489443 is about 2052.4847477878.

The spelling of 8646489443 in words is "eight billion, six hundred forty-six million, four hundred eighty-nine thousand, four hundred forty-three".