8404705489 has 2 divisors, whose sum is σ = 8404705490. Its totient is φ = 8404705488.

The previous prime is 8404705459. The next prime is 8404705597. The reversal of 8404705489 is 9845074048.

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., 8044654864 + 360050625 = 89692^2 + 18975^2 .

It is a cyclic number.

It is not a de Polignac number, because 8404705489 - 2⁵ = 8404705457 is a prime.

It is not a weakly prime, because it can be changed into another prime (8404705409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4202352744 + 4202352745.

It is an arithmetic number, because the mean of its divisors is an integer number (4202352745).

Almost surely, 2^8404705489 is an apocalyptic number.

It is an amenable number.

8404705489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8404705489 is an equidigital number, since it uses as much as digits as its factorization.

8404705489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The square root of 8404705489 is about 91677.1808521619. The cubic root of 8404705489 is about 2033.1722175275.

The spelling of 8404705489 in words is "eight billion, four hundred four million, seven hundred five thousand, four hundred eighty-nine".