394444444453 has 2 divisors, whose sum is σ = 394444444454. Its totient is φ = 394444444452.

The previous prime is 394444444403. The next prime is 394444444463. The reversal of 394444444453 is 354444444493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297768845124 + 96675599329 = 545682^2 + 310927^2 .

It is an emirp because it is prime and its reverse (354444444493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394444444453 - 2⁹ = 394444443941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394444444453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394444444403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197222222226 + 197222222227.

It is an arithmetic number, because the mean of its divisors is an integer number (197222222227).

Almost surely, 2^394444444453 is an apocalyptic number.

It is an amenable number.

394444444453 is a deficient number, since it is larger than the sum of its proper divisors (1).

394444444453 is an equidigital number, since it uses as much as digits as its factorization.

394444444453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26542080, while the sum is 52.

The spelling of 394444444453 in words is "three hundred ninety-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred fifty-three".