8719449173 has 2 divisors, whose sum is σ = 8719449174. Its totient is φ = 8719449172.

The previous prime is 8719449133. The next prime is 8719449181. The reversal of 8719449173 is 3719449178.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7059864529 + 1659584644 = 84023^2 + 40738^2 .

It is a cyclic number.

It is not a de Polignac number, because 8719449173 - 2⁸ = 8719448917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8719449133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4359724586 + 4359724587.

It is an arithmetic number, because the mean of its divisors is an integer number (4359724587).

Almost surely, 2^8719449173 is an apocalyptic number.

It is an amenable number.

8719449173 is a deficient number, since it is larger than the sum of its proper divisors (1).

8719449173 is an equidigital number, since it uses as much as digits as its factorization.

8719449173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 53.

The square root of 8719449173 is about 93377.9908383126. The cubic root of 8719449173 is about 2058.2415928224.

The spelling of 8719449173 in words is "eight billion, seven hundred nineteen million, four hundred forty-nine thousand, one hundred seventy-three".