443449969 has 2 divisors, whose sum is σ = 443449970. Its totient is φ = 443449968.

The previous prime is 443449967. The next prime is 443450011. The reversal of 443449969 is 969944344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378808369 + 64641600 = 19463^2 + 8040^2 .

It is a cyclic number.

It is not a de Polignac number, because 443449969 - 2¹ = 443449967 is a prime.

It is a super-2 number, since 2×443449969² = 393295750012201922, which contains 22 as substring.

Together with 443449967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (443449967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221724984 + 221724985.

It is an arithmetic number, because the mean of its divisors is an integer number (221724985).

Almost surely, 2^443449969 is an apocalyptic number.

It is an amenable number.

443449969 is a deficient number, since it is larger than the sum of its proper divisors (1).

443449969 is an equidigital number, since it uses as much as digits as its factorization.

443449969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 52.

The square root of 443449969 is about 21058.2518030344. The cubic root of 443449969 is about 762.5732081999.

The spelling of 443449969 in words is "four hundred forty-three million, four hundred forty-nine thousand, nine hundred sixty-nine".