394949407 has 2 divisors, whose sum is σ = 394949408. Its totient is φ = 394949406.

The previous prime is 394949329. The next prime is 394949417. The reversal of 394949407 is 704949493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394949407 - 2²³ = 386560799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394949417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197474703 + 197474704.

It is an arithmetic number, because the mean of its divisors is an integer number (197474704).

Almost surely, 2^394949407 is an apocalyptic number.

394949407 is a deficient number, since it is larger than the sum of its proper divisors (1).

394949407 is an equidigital number, since it uses as much as digits as its factorization.

394949407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 394949407 is about 19873.3340685452. The cubic root of 394949407 is about 733.6920648225.

The spelling of 394949407 in words is "three hundred ninety-four million, nine hundred forty-nine thousand, four hundred seven".