394444242444493 has 2 divisors, whose sum is σ = 394444242444494. Its totient is φ = 394444242444492.

The previous prime is 394444242444481. The next prime is 394444242444533.

394444242444493 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230722672235364 + 163721570209129 = 15189558^2 + 12795373^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394444242444493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394444242444463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197222121222246 + 197222121222247.

It is an arithmetic number, because the mean of its divisors is an integer number (197222121222247).

Almost surely, 2^{394444242444493} is an apocalyptic number.

It is an amenable number.

394444242444493 is a deficient number, since it is larger than the sum of its proper divisors (1).

394444242444493 is an equidigital number, since it uses as much as digits as its factorization.

394444242444493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 764411904, while the sum is 64.

The spelling of 394444242444493 in words is "three hundred ninety-four trillion, four hundred forty-four billion, two hundred forty-two million, four hundred forty-four thousand, four hundred ninety-three".