8391792393 has 12 divisors (see below), whose sum is σ = 12122978868. Its totient is φ = 5593835520.

The previous prime is 8391792391. The next prime is 8391792421. The reversal of 8391792393 is 3932971938.

8391792393 is a `hidden beast` number, since 83 + 9 + 179 + 2 + 393 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4365509184 + 4026283209 = 66072^2 + 63453^2 .

It is not a de Polignac number, because 8391792393 - 2¹ = 8391792391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8391792391) 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, 25273 + ... + 131993.

It is an arithmetic number, because the mean of its divisors is an integer number (1010248239).

Almost surely, 2^8391792393 is an apocalyptic number.

It is an amenable number.

8391792393 is a deficient number, since it is larger than the sum of its proper divisors (3731186475).

8391792393 is a wasteful number, since it uses less digits than its factorization.

8391792393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115464 (or 115461 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 8391792393 is about 91606.7267890301. The cubic root of 8391792393 is about 2032.1304199498.

The spelling of 8391792393 in words is "eight billion, three hundred ninety-one million, seven hundred ninety-two thousand, three hundred ninety-three".