8248217939 has 4 divisors (see below), whose sum is σ = 8882696256. Its totient is φ = 7613739624.

The previous prime is 8248217921. The next prime is 8248217987. The reversal of 8248217939 is 9397128428.

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

It is a cyclic number.

It is not a de Polignac number, because 8248217939 - 2⁸ = 8248217683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8248217339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317239139 + ... + 317239164.

It is an arithmetic number, because the mean of its divisors is an integer number (2220674064).

Almost surely, 2^8248217939 is an apocalyptic number.

8248217939 is a deficient number, since it is larger than the sum of its proper divisors (634478317).

8248217939 is a wasteful number, since it uses less digits than its factorization.

8248217939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634478316.

The product of its digits is 1741824, while the sum is 53.

The square root of 8248217939 is about 90819.7001701723. The cubic root of 8248217939 is about 2020.4745102134.

The spelling of 8248217939 in words is "eight billion, two hundred forty-eight million, two hundred seventeen thousand, nine hundred thirty-nine".