8705743489 has 2 divisors, whose sum is σ = 8705743490. Its totient is φ = 8705743488.

The previous prime is 8705743481. The next prime is 8705743507. The reversal of 8705743489 is 9843475078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5175363600 + 3530379889 = 71940^2 + 59417^2 .

It is a cyclic number.

It is not a de Polignac number, because 8705743489 - 2³ = 8705743481 is a prime.

It is not a weakly prime, because it can be changed into another prime (8705743481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4352871744 + 4352871745.

It is an arithmetic number, because the mean of its divisors is an integer number (4352871745).

Almost surely, 2^8705743489 is an apocalyptic number.

It is an amenable number.

8705743489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8705743489 is an equidigital number, since it uses as much as digits as its factorization.

8705743489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The square root of 8705743489 is about 93304.5737839255. The cubic root of 8705743489 is about 2057.1626102066.

The spelling of 8705743489 in words is "eight billion, seven hundred five million, seven hundred forty-three thousand, four hundred eighty-nine".