347993 has 2 divisors, whose sum is σ = 347994. Its totient is φ = 347992.

The previous prime is 347989. The next prime is 348001. The reversal of 347993 is 399743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262144 + 85849 = 512^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 347993 - 2² = 347989 is a prime.

It is not a weakly prime, because it can be changed into another prime (347933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173996 + 173997.

It is an arithmetic number, because the mean of its divisors is an integer number (173997).

2³⁴⁷⁹⁹³ is an apocalyptic number.

It is an amenable number.

347993 is a deficient number, since it is larger than the sum of its proper divisors (1).

347993 is an equidigital number, since it uses as much as digits as its factorization.

347993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 35.

The square root of 347993 is about 589.9093150646. The cubic root of 347993 is about 70.3380249385.

The spelling of 347993 in words is "three hundred forty-seven thousand, nine hundred ninety-three".