442576349 has 2 divisors, whose sum is σ = 442576350. Its totient is φ = 442576348.

The previous prime is 442576307. The next prime is 442576357. The reversal of 442576349 is 943675244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308248249 + 134328100 = 17557^2 + 11590^2 .

It is a cyclic number.

It is not a de Polignac number, because 442576349 - 2⁸ = 442576093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442576369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221288174 + 221288175.

It is an arithmetic number, because the mean of its divisors is an integer number (221288175).

Almost surely, 2^442576349 is an apocalyptic number.

It is an amenable number.

442576349 is a deficient number, since it is larger than the sum of its proper divisors (1).

442576349 is an equidigital number, since it uses as much as digits as its factorization.

442576349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 44.

The square root of 442576349 is about 21037.4986393345. The cubic root of 442576349 is about 762.0721090795.

The spelling of 442576349 in words is "four hundred forty-two million, five hundred seventy-six thousand, three hundred forty-nine".