8217475923 has 4 divisors (see below), whose sum is σ = 10956634568. Its totient is φ = 5478317280.

The previous prime is 8217475909. The next prime is 8217475933. The reversal of 8217475923 is 3295747128.

It is a happy number.

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

It is not a de Polignac number, because 8217475923 - 2⁴ = 8217475907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8217475933) 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, 1369579318 + ... + 1369579323.

It is an arithmetic number, because the mean of its divisors is an integer number (2739158642).

Almost surely, 2^8217475923 is an apocalyptic number.

8217475923 is a deficient number, since it is larger than the sum of its proper divisors (2739158645).

8217475923 is a wasteful number, since it uses less digits than its factorization.

8217475923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739158644.

The product of its digits is 846720, while the sum is 48.

The square root of 8217475923 is about 90650.2946658200. The cubic root of 8217475923 is about 2017.9612082184.

The spelling of 8217475923 in words is "eight billion, two hundred seventeen million, four hundred seventy-five thousand, nine hundred twenty-three".