7993689897 has 8 divisors (see below), whose sum is σ = 10659091456. Its totient is φ = 5328707472.

The previous prime is 7993689857. The next prime is 7993689919. The reversal of 7993689897 is 7989863997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7993689897 - 2²⁴ = 7976912681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7993689857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57193 + ... + 138774.

It is an arithmetic number, because the mean of its divisors is an integer number (1332386432).

Almost surely, 2^7993689897 is an apocalyptic number.

It is an amenable number.

7993689897 is a deficient number, since it is larger than the sum of its proper divisors (2665401559).

7993689897 is a wasteful number, since it uses less digits than its factorization.

7993689897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209567.

The product of its digits is 370355328, while the sum is 75.

The square root of 7993689897 is about 89407.4375933009. The cubic root of 7993689897 is about 1999.4740197679.

The spelling of 7993689897 in words is "seven billion, nine hundred ninety-three million, six hundred eighty-nine thousand, eight hundred ninety-seven".