8628289217 has 4 divisors (see below), whose sum is σ = 8628613716. Its totient is φ = 8627964720.

The previous prime is 8628289211. The next prime is 8628289223. The reversal of 8628289217 is 7129828268.

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

It is an interprime number because it is at equal distance from previous prime (8628289211) and next prime (8628289223).

It can be written as a sum of positive squares in 2 ways, for example, as 258052096 + 8370237121 = 16064^2 + 91489^2 .

It is a cyclic number.

It is not a de Polignac number, because 8628289217 - 2¹⁴ = 8628272833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8628289211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118418 + ... + 176859.

It is an arithmetic number, because the mean of its divisors is an integer number (2157153429).

Almost surely, 2^8628289217 is an apocalyptic number.

It is an amenable number.

8628289217 is a deficient number, since it is larger than the sum of its proper divisors (324499).

8628289217 is a wasteful number, since it uses less digits than its factorization.

8628289217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324498.

The product of its digits is 1548288, while the sum is 53.

The square root of 8628289217 is about 92888.5849660764. The cubic root of 8628289217 is about 2051.0436262190.

The spelling of 8628289217 in words is "eight billion, six hundred twenty-eight million, two hundred eighty-nine thousand, two hundred seventeen".