8442783617 has 8 divisors (see below), whose sum is σ = 8756821992. Its totient is φ = 8133264000.

The previous prime is 8442783563. The next prime is 8442783637. The reversal of 8442783617 is 7163872448.

It can be written as a sum of positive squares in 4 ways, for example, as 3904875121 + 4537908496 = 62489^2 + 67364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8442783617 - 2¹⁴ = 8442767233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8442783637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125884 + ... + 1133357.

It is an arithmetic number, because the mean of its divisors is an integer number (1094602749).

Almost surely, 2^8442783617 is an apocalyptic number.

It is an amenable number.

8442783617 is a deficient number, since it is larger than the sum of its proper divisors (314038375).

8442783617 is a wasteful number, since it uses less digits than its factorization.

8442783617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259379.

The product of its digits is 1806336, while the sum is 50.

The square root of 8442783617 is about 91884.6212213992. The cubic root of 8442783617 is about 2036.2380702368.

The spelling of 8442783617 in words is "eight billion, four hundred forty-two million, seven hundred eighty-three thousand, six hundred seventeen".