393141943 has 2 divisors, whose sum is σ = 393141944. Its totient is φ = 393141942.

The previous prime is 393141941. The next prime is 393141961. The reversal of 393141943 is 349141393.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 393141943 - 2¹ = 393141941 is a prime.

Together with 393141941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393141941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196570971 + 196570972.

It is an arithmetic number, because the mean of its divisors is an integer number (196570972).

Almost surely, 2^393141943 is an apocalyptic number.

393141943 is a deficient number, since it is larger than the sum of its proper divisors (1).

393141943 is an equidigital number, since it uses as much as digits as its factorization.

393141943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 393141943 is about 19827.8073169980. The cubic root of 393141943 is about 732.5711194522.

The spelling of 393141943 in words is "three hundred ninety-three million, one hundred forty-one thousand, nine hundred forty-three".