8196977393 has 4 divisors (see below), whose sum is σ = 8942157168. Its totient is φ = 7451797620.

The previous prime is 8196977389. The next prime is 8196977407. The reversal of 8196977393 is 3937796918.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8196977393 - 2² = 8196977389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8196977323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372589871 + ... + 372589892.

It is an arithmetic number, because the mean of its divisors is an integer number (2235539292).

Almost surely, 2^8196977393 is an apocalyptic number.

It is an amenable number.

8196977393 is a deficient number, since it is larger than the sum of its proper divisors (745179775).

8196977393 is a wasteful number, since it uses less digits than its factorization.

8196977393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745179774.

The product of its digits is 15431472, while the sum is 62.

The square root of 8196977393 is about 90537.1602879171. The cubic root of 8196977393 is about 2016.2818733571.

It can be divided in two parts, 8196 and 977393, that added together give a palindrome (985589).

The spelling of 8196977393 in words is "eight billion, one hundred ninety-six million, nine hundred seventy-seven thousand, three hundred ninety-three".