8347993 has 2 divisors, whose sum is σ = 8347994. Its totient is φ = 8347992.

The previous prime is 8347991. The next prime is 8348017. The reversal of 8347993 is 3997438.

8347993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6365529 + 1982464 = 2523^2 + 1408^2 .

It is a cyclic number.

It is not a de Polignac number, because 8347993 - 2¹ = 8347991 is a prime.

Together with 8347991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8347991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4173996 + 4173997.

It is an arithmetic number, because the mean of its divisors is an integer number (4173997).

Almost surely, 2^8347993 is an apocalyptic number.

It is an amenable number.

8347993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8347993 is an equidigital number, since it uses as much as digits as its factorization.

8347993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 8347993 is about 2889.2893589947. The cubic root of 8347993 is about 202.8588809469.

The spelling of 8347993 in words is "eight million, three hundred forty-seven thousand, nine hundred ninety-three".