442343249 has 2 divisors, whose sum is σ = 442343250. Its totient is φ = 442343248.

The previous prime is 442343233. The next prime is 442343257. The reversal of 442343249 is 942343244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233020225 + 209323024 = 15265^2 + 14468^2 .

It is a cyclic number.

It is not a de Polignac number, because 442343249 - 2⁴ = 442343233 is a prime.

It is not a weakly prime, because it can be changed into another prime (442343299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221171624 + 221171625.

It is an arithmetic number, because the mean of its divisors is an integer number (221171625).

Almost surely, 2^442343249 is an apocalyptic number.

It is an amenable number.

442343249 is a deficient number, since it is larger than the sum of its proper divisors (1).

442343249 is an equidigital number, since it uses as much as digits as its factorization.

442343249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 35.

The square root of 442343249 is about 21031.9578023540. The cubic root of 442343249 is about 761.9382939724.

The spelling of 442343249 in words is "four hundred forty-two million, three hundred forty-three thousand, two hundred forty-nine".