443368649 has 2 divisors, whose sum is σ = 443368650. Its totient is φ = 443368648.

The previous prime is 443368643. The next prime is 443368699. The reversal of 443368649 is 946863344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274498624 + 168870025 = 16568^2 + 12995^2 .

It is a cyclic number.

It is not a de Polignac number, because 443368649 - 2¹² = 443364553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (443368643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221684324 + 221684325.

It is an arithmetic number, because the mean of its divisors is an integer number (221684325).

Almost surely, 2^443368649 is an apocalyptic number.

It is an amenable number.

443368649 is a deficient number, since it is larger than the sum of its proper divisors (1).

443368649 is an equidigital number, since it uses as much as digits as its factorization.

443368649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 47.

The square root of 443368649 is about 21056.3208799638. The cubic root of 443368649 is about 762.5265917090.

The spelling of 443368649 in words is "four hundred forty-three million, three hundred sixty-eight thousand, six hundred forty-nine".