443426897 has 2 divisors, whose sum is σ = 443426898. Its totient is φ = 443426896.

The previous prime is 443426881. The next prime is 443426903. The reversal of 443426897 is 798624344.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348344896 + 95082001 = 18664^2 + 9751^2 .

It is a cyclic number.

It is not a de Polignac number, because 443426897 - 2⁴ = 443426881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (443426857) 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, 221713448 + 221713449.

It is an arithmetic number, because the mean of its divisors is an integer number (221713449).

Almost surely, 2^443426897 is an apocalyptic number.

It is an amenable number.

443426897 is a deficient number, since it is larger than the sum of its proper divisors (1).

443426897 is an equidigital number, since it uses as much as digits as its factorization.

443426897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 47.

The square root of 443426897 is about 21057.7039821534. The cubic root of 443426897 is about 762.5599828115.

The spelling of 443426897 in words is "four hundred forty-three million, four hundred twenty-six thousand, eight hundred ninety-seven".