8389773973 has 12 divisors (see below), whose sum is σ = 9778295052. Its totient is φ = 7177410240.

The previous prime is 8389773971. The next prime is 8389773991. The reversal of 8389773973 is 3793779838.

It is a happy number.

8389773973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5217606289 + 3172167684 = 72233^2 + 56322^2 .

It is not a de Polignac number, because 8389773973 - 2¹ = 8389773971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8389773971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138790 + ... + 189847.

It is an arithmetic number, because the mean of its divisors is an integer number (814857921).

Almost surely, 2^8389773973 is an apocalyptic number.

It is an amenable number.

8389773973 is a deficient number, since it is larger than the sum of its proper divisors (1388521079).

8389773973 is a wasteful number, since it uses less digits than its factorization.

8389773973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329172 (or 329165 counting only the distinct ones).

The product of its digits is 48009024, while the sum is 64.

The square root of 8389773973 is about 91595.7093591179. The cubic root of 8389773973 is about 2031.9674821099.

The spelling of 8389773973 in words is "eight billion, three hundred eighty-nine million, seven hundred seventy-three thousand, nine hundred seventy-three".