443820049 has 2 divisors, whose sum is σ = 443820050. Its totient is φ = 443820048.

The previous prime is 443820019. The next prime is 443820053. The reversal of 443820049 is 940028344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441840400 + 1979649 = 21020^2 + 1407^2 .

It is a cyclic number.

It is not a de Polignac number, because 443820049 - 2¹³ = 443811857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 443819996 and 443820023.

It is not a weakly prime, because it can be changed into another prime (443820019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221910024 + 221910025.

It is an arithmetic number, because the mean of its divisors is an integer number (221910025).

Almost surely, 2^443820049 is an apocalyptic number.

It is an amenable number.

443820049 is a deficient number, since it is larger than the sum of its proper divisors (1).

443820049 is an equidigital number, since it uses as much as digits as its factorization.

443820049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 443820049 is about 21067.0370246981. The cubic root of 443820049 is about 762.7852837005.

The spelling of 443820049 in words is "four hundred forty-three million, eight hundred twenty thousand, forty-nine".