394606448749 has 2 divisors, whose sum is σ = 394606448750. Its totient is φ = 394606448748.

The previous prime is 394606448707. The next prime is 394606448827. The reversal of 394606448749 is 947844606493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390987584100 + 3618864649 = 625290^2 + 60157^2 .

It is a cyclic number.

It is not a de Polignac number, because 394606448749 - 2¹¹ = 394606446701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394606440749) 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, 197303224374 + 197303224375.

It is an arithmetic number, because the mean of its divisors is an integer number (197303224375).

Almost surely, 2^394606448749 is an apocalyptic number.

It is an amenable number.

394606448749 is a deficient number, since it is larger than the sum of its proper divisors (1).

394606448749 is an equidigital number, since it uses as much as digits as its factorization.

394606448749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125411328, while the sum is 64.

The spelling of 394606448749 in words is "three hundred ninety-four billion, six hundred six million, four hundred forty-eight thousand, seven hundred forty-nine".