442444153 has 2 divisors, whose sum is σ = 442444154. Its totient is φ = 442444152.

The previous prime is 442444147. The next prime is 442444207. The reversal of 442444153 is 351444244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422836969 + 19607184 = 20563^2 + 4428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442444153 is a prime.

It is not a weakly prime, because it can be changed into another prime (442444253) 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, 221222076 + 221222077.

It is an arithmetic number, because the mean of its divisors is an integer number (221222077).

Almost surely, 2^442444153 is an apocalyptic number.

It is an amenable number.

442444153 is a deficient number, since it is larger than the sum of its proper divisors (1).

442444153 is an equidigital number, since it uses as much as digits as its factorization.

442444153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 31.

The square root of 442444153 is about 21034.3564912264. The cubic root of 442444153 is about 761.9962254367.

Adding to 442444153 its reverse (351444244), we get a palindrome (793888397).

Subtracting from 442444153 its reverse (351444244), we obtain a palindrome (90999909).

The spelling of 442444153 in words is "four hundred forty-two million, four hundred forty-four thousand, one hundred fifty-three".