8217344398 has 4 divisors (see below), whose sum is σ = 12326016600. Its totient is φ = 4108672198.

The previous prime is 8217344381. The next prime is 8217344407. The reversal of 8217344398 is 8934437128.

It is a happy number.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 2054336098 + ... + 2054336101.

It is an arithmetic number, because the mean of its divisors is an integer number (3081504150).

Almost surely, 2^8217344398 is an apocalyptic number.

8217344398 is a deficient number, since it is larger than the sum of its proper divisors (4108672202).

8217344398 is a wasteful number, since it uses less digits than its factorization.

8217344398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108672201.

The product of its digits is 1161216, while the sum is 49.

The square root of 8217344398 is about 90649.5692102285. The cubic root of 8217344398 is about 2017.9504419861.

The spelling of 8217344398 in words is "eight billion, two hundred seventeen million, three hundred forty-four thousand, three hundred ninety-eight".