8217423384 has 16 divisors (see below), whose sum is σ = 20543558520. Its totient is φ = 2739141120.

The previous prime is 8217423341. The next prime is 8217423421. The reversal of 8217423384 is 4833247128.

It is a happy number.

It is a super-2 number, since 2×8217423384² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 171196297 + ... + 171196344.

Almost surely, 2^8217423384 is an apocalyptic number.

It is an amenable number.

8217423384 is an abundant number, since it is smaller than the sum of its proper divisors (12326135136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8217423384 is a wasteful number, since it uses less digits than its factorization.

8217423384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342392650 (or 342392646 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 8217423384 is about 90650.0048758962. The cubic root of 8217423384 is about 2017.9569075511.

The spelling of 8217423384 in words is "eight billion, two hundred seventeen million, four hundred twenty-three thousand, three hundred eighty-four".