8427158973 has 16 divisors (see below), whose sum is σ = 12496401600. Its totient is φ = 5612831280.

The previous prime is 8427158969. The next prime is 8427158989. The reversal of 8427158973 is 3798517248.

It is a happy number.

It is not a de Polignac number, because 8427158973 - 2² = 8427158969 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8427158473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117123 + ... + 174848.

It is an arithmetic number, because the mean of its divisors is an integer number (781025100).

Almost surely, 2^8427158973 is an apocalyptic number.

It is an amenable number.

8427158973 is a deficient number, since it is larger than the sum of its proper divisors (4069242627).

8427158973 is a wasteful number, since it uses less digits than its factorization.

8427158973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293049 (or 293043 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 8427158973 is about 91799.5586754098. The cubic root of 8427158973 is about 2034.9811727074.

The spelling of 8427158973 in words is "eight billion, four hundred twenty-seven million, one hundred fifty-eight thousand, nine hundred seventy-three".