394948319 has 2 divisors, whose sum is σ = 394948320. Its totient is φ = 394948318.

The previous prime is 394948297. The next prime is 394948327. The reversal of 394948319 is 913849493.

It is a strong prime.

It is an emirp because it is prime and its reverse (913849493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394948319 - 2¹² = 394944223 is a prime.

It is a super-2 number, since 2×394948319² = 311968349361851522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394948349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197474159 + 197474160.

It is an arithmetic number, because the mean of its divisors is an integer number (197474160).

Almost surely, 2^394948319 is an apocalyptic number.

394948319 is a deficient number, since it is larger than the sum of its proper divisors (1).

394948319 is an equidigital number, since it uses as much as digits as its factorization.

394948319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 394948319 is about 19873.3066951627. The cubic root of 394948319 is about 733.6913911011.

The spelling of 394948319 in words is "three hundred ninety-four million, nine hundred forty-eight thousand, three hundred nineteen".