8347745473 has 4 divisors (see below), whose sum is σ = 8384198740. Its totient is φ = 8311292208.

The previous prime is 8347745429. The next prime is 8347745479. The reversal of 8347745473 is 3745477438.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3745477438 = 2 ⋅1872738719.

It can be written as a sum of positive squares in 2 ways, for example, as 7981099569 + 366645904 = 89337^2 + 19148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8347745473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8347745473.

It is not an unprimeable number, because it can be changed into a prime (8347745479) 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, 18226290 + ... + 18226747.

It is an arithmetic number, because the mean of its divisors is an integer number (2096049685).

Almost surely, 2^8347745473 is an apocalyptic number.

It is an amenable number.

8347745473 is a deficient number, since it is larger than the sum of its proper divisors (36453267).

8347745473 is a wasteful number, since it uses less digits than its factorization.

8347745473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36453266.

The product of its digits is 7902720, while the sum is 52.

The square root of 8347745473 is about 91365.9973567848. The cubic root of 8347745473 is about 2028.5687593222.

The spelling of 8347745473 in words is "eight billion, three hundred forty-seven million, seven hundred forty-five thousand, four hundred seventy-three".