7934643993 has 8 divisors (see below), whose sum is σ = 10585310656. Its totient is φ = 5286870000.

The previous prime is 7934643973. The next prime is 7934644001. The reversal of 7934643993 is 3993464397.

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

It is not a de Polignac number, because 7934643993 - 2⁸ = 7934643737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7934643943) 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, 716758 + ... + 727743.

It is an arithmetic number, because the mean of its divisors is an integer number (1323163832).

Almost surely, 2^7934643993 is an apocalyptic number.

It is an amenable number.

7934643993 is a deficient number, since it is larger than the sum of its proper divisors (2650666663).

7934643993 is a wasteful number, since it uses less digits than its factorization.

7934643993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446335.

The product of its digits is 13226976, while the sum is 57.

The square root of 7934643993 is about 89076.6186661797. The cubic root of 7934643993 is about 1994.5387671245.

The spelling of 7934643993 in words is "seven billion, nine hundred thirty-four million, six hundred forty-three thousand, nine hundred ninety-three".