442343449 has 2 divisors, whose sum is σ = 442343450. Its totient is φ = 442343448.

The previous prime is 442343441. The next prime is 442343471. The reversal of 442343449 is 944343244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337383424 + 104960025 = 18368^2 + 10245^2 .

It is a cyclic number.

It is not a de Polignac number, because 442343449 - 2³ = 442343441 is a prime.

It is not a weakly prime, because it can be changed into another prime (442343441) 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, 221171724 + 221171725.

It is an arithmetic number, because the mean of its divisors is an integer number (221171725).

Almost surely, 2^442343449 is an apocalyptic number.

It is an amenable number.

442343449 is a deficient number, since it is larger than the sum of its proper divisors (1).

442343449 is an equidigital number, since it uses as much as digits as its factorization.

442343449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 37.

The square root of 442343449 is about 21031.9625570226. The cubic root of 442343449 is about 761.9384088061.

The spelling of 442343449 in words is "four hundred forty-two million, three hundred forty-three thousand, four hundred forty-nine".