442314643 has 2 divisors, whose sum is σ = 442314644. Its totient is φ = 442314642.

The previous prime is 442314611. The next prime is 442314647. The reversal of 442314643 is 346413244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442314643 - 2⁵ = 442314611 is a prime.

It is not a weakly prime, because it can be changed into another prime (442314647) 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, 221157321 + 221157322.

It is an arithmetic number, because the mean of its divisors is an integer number (221157322).

Almost surely, 2^442314643 is an apocalyptic number.

442314643 is a deficient number, since it is larger than the sum of its proper divisors (1).

442314643 is an equidigital number, since it uses as much as digits as its factorization.

442314643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 31.

The square root of 442314643 is about 21031.2777310367. The cubic root of 442314643 is about 761.9218689626.

Adding to 442314643 its reverse (346413244), we get a palindrome (788727887).

The spelling of 442314643 in words is "four hundred forty-two million, three hundred fourteen thousand, six hundred forty-three".