8239658473 has 4 divisors (see below), whose sum is σ = 8315251780. Its totient is φ = 8164065168.

The previous prime is 8239658461. The next prime is 8239658491. The reversal of 8239658473 is 3748569328.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3216818089 + 5022840384 = 56717^2 + 70872^2 .

It is a cyclic number.

It is not a de Polignac number, because 8239658473 - 2⁹ = 8239657961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8239658573) 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, 37796490 + ... + 37796707.

It is an arithmetic number, because the mean of its divisors is an integer number (2078812945).

Almost surely, 2^8239658473 is an apocalyptic number.

It is an amenable number.

8239658473 is a deficient number, since it is larger than the sum of its proper divisors (75593307).

8239658473 is a wasteful number, since it uses less digits than its factorization.

8239658473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75593306.

The product of its digits is 8709120, while the sum is 55.

The square root of 8239658473 is about 90772.5645390720. The cubic root of 8239658473 is about 2019.7753624817.

The spelling of 8239658473 in words is "eight billion, two hundred thirty-nine million, six hundred fifty-eight thousand, four hundred seventy-three".