394488373 has 2 divisors, whose sum is σ = 394488374. Its totient is φ = 394488372.

The previous prime is 394488307. The next prime is 394488379. The reversal of 394488373 is 373884493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365306769 + 29181604 = 19113^2 + 5402^2 .

It is an emirp because it is prime and its reverse (373884493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394488373 - 2²¹ = 392391221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394488379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197244186 + 197244187.

It is an arithmetic number, because the mean of its divisors is an integer number (197244187).

Almost surely, 2^394488373 is an apocalyptic number.

It is an amenable number.

394488373 is a deficient number, since it is larger than the sum of its proper divisors (1).

394488373 is an equidigital number, since it uses as much as digits as its factorization.

394488373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 49.

The square root of 394488373 is about 19861.7313696465. The cubic root of 394488373 is about 733.4064681652.

The spelling of 394488373 in words is "three hundred ninety-four million, four hundred eighty-eight thousand, three hundred seventy-three".