443342993 has 2 divisors, whose sum is σ = 443342994. Its totient is φ = 443342992.

The previous prime is 443342959. The next prime is 443343007. The reversal of 443342993 is 399243344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378185809 + 65157184 = 19447^2 + 8072^2 .

It is a cyclic number.

It is not a de Polignac number, because 443342993 - 2⁶ = 443342929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 443342993.

It is not a weakly prime, because it can be changed into another prime (443342293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221671496 + 221671497.

It is an arithmetic number, because the mean of its divisors is an integer number (221671497).

Almost surely, 2^443342993 is an apocalyptic number.

It is an amenable number.

443342993 is a deficient number, since it is larger than the sum of its proper divisors (1).

443342993 is an equidigital number, since it uses as much as digits as its factorization.

443342993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 41.

The square root of 443342993 is about 21055.7116479116. The cubic root of 443342993 is about 762.5118832870.

The spelling of 443342993 in words is "four hundred forty-three million, three hundred forty-two thousand, nine hundred ninety-three".