8438910617 has 4 divisors (see below), whose sum is σ = 8577253476. Its totient is φ = 8300567760.

The previous prime is 8438910589. The next prime is 8438910631. The reversal of 8438910617 is 7160198348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1773167881 + 6665742736 = 42109^2 + 81644^2 .

It is a cyclic number.

It is not a de Polignac number, because 8438910617 - 2¹⁰ = 8438909593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8438910647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69171338 + ... + 69171459.

It is an arithmetic number, because the mean of its divisors is an integer number (2144313369).

Almost surely, 2^8438910617 is an apocalyptic number.

It is an amenable number.

8438910617 is a deficient number, since it is larger than the sum of its proper divisors (138342859).

8438910617 is a wasteful number, since it uses less digits than its factorization.

8438910617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138342858.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 8438910617 is about 91863.5434598514. The cubic root of 8438910617 is about 2035.9266580839.

The spelling of 8438910617 in words is "eight billion, four hundred thirty-eight million, nine hundred ten thousand, six hundred seventeen".