394448843 has 4 divisors (see below), whose sum is σ = 401891328. Its totient is φ = 387006360.

The previous prime is 394448839. The next prime is 394448861. The reversal of 394448843 is 348844493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348844493 = 5119 ⋅68147.

It is a cyclic number.

It is not a de Polignac number, because 394448843 - 2² = 394448839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394448833) 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 in 3 ways as a sum of consecutive naturals, for example, 3721163 + ... + 3721268.

It is an arithmetic number, because the mean of its divisors is an integer number (100472832).

Almost surely, 2^394448843 is an apocalyptic number.

394448843 is a deficient number, since it is larger than the sum of its proper divisors (7442485).

394448843 is an equidigital number, since it uses as much as digits as its factorization.

394448843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7442484.

The product of its digits is 1327104, while the sum is 47.

The square root of 394448843 is about 19860.7362149544. The cubic root of 394448843 is about 733.3819701672.

The spelling of 394448843 in words is "three hundred ninety-four million, four hundred forty-eight thousand, eight hundred forty-three".