394767223 has 2 divisors, whose sum is σ = 394767224. Its totient is φ = 394767222.

The previous prime is 394767179. The next prime is 394767253. The reversal of 394767223 is 322767493.

It is a strong prime.

It is an emirp because it is prime and its reverse (322767493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394767223 - 2⁹ = 394766711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394767223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394767253) 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, 197383611 + 197383612.

It is an arithmetic number, because the mean of its divisors is an integer number (197383612).

Almost surely, 2^394767223 is an apocalyptic number.

394767223 is a deficient number, since it is larger than the sum of its proper divisors (1).

394767223 is an equidigital number, since it uses as much as digits as its factorization.

394767223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 43.

The square root of 394767223 is about 19868.7499103492. The cubic root of 394767223 is about 733.5792339039.

The spelling of 394767223 in words is "three hundred ninety-four million, seven hundred sixty-seven thousand, two hundred twenty-three".