394444444403 has 2 divisors, whose sum is σ = 394444444404. Its totient is φ = 394444444402.

The previous prime is 394444444399. The next prime is 394444444453. The reversal of 394444444403 is 304444444493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394444444403 - 2² = 394444444399 is a prime.

It is not a weakly prime, because it can be changed into another prime (394444444453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197222222201 + 197222222202.

It is an arithmetic number, because the mean of its divisors is an integer number (197222222202).

Almost surely, 2^394444444403 is an apocalyptic number.

394444444403 is a deficient number, since it is larger than the sum of its proper divisors (1).

394444444403 is an equidigital number, since it uses as much as digits as its factorization.

394444444403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416, while the sum is 47.

Adding to 394444444403 its reverse (304444444493), we get a palindrome (698888888896).

The spelling of 394444444403 in words is "three hundred ninety-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred three".