8427239873 has 8 divisors (see below), whose sum is σ = 9077510400. Its totient is φ = 7777258128.

The previous prime is 8427239869. The next prime is 8427239897. The reversal of 8427239873 is 3789327248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8427239873 - 2² = 8427239869 is a prime.

It is a super-2 number, since 2×8427239873² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8427239573) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9563 + ... + 130176.

It is an arithmetic number, because the mean of its divisors is an integer number (1134688800).

Almost surely, 2^8427239873 is an apocalyptic number.

It is an amenable number.

8427239873 is a deficient number, since it is larger than the sum of its proper divisors (650270527).

8427239873 is a wasteful number, since it uses less digits than its factorization.

8427239873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144391.

The product of its digits is 4064256, while the sum is 53.

The square root of 8427239873 is about 91799.9993082789. Note that the first 3 decimals coincide. The cubic root of 8427239873 is about 2034.9876845679.

The spelling of 8427239873 in words is "eight billion, four hundred twenty-seven million, two hundred thirty-nine thousand, eight hundred seventy-three".