442244393 has 2 divisors, whose sum is σ = 442244394. Its totient is φ = 442244392.

The previous prime is 442244377. The next prime is 442244423. The reversal of 442244393 is 393442244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282676969 + 159567424 = 16813^2 + 12632^2 .

It is a cyclic number.

It is not a de Polignac number, because 442244393 - 2⁴ = 442244377 is a prime.

It is not a weakly prime, because it can be changed into another prime (442244333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221122196 + 221122197.

It is an arithmetic number, because the mean of its divisors is an integer number (221122197).

Almost surely, 2^442244393 is an apocalyptic number.

It is an amenable number.

442244393 is a deficient number, since it is larger than the sum of its proper divisors (1).

442244393 is an equidigital number, since it uses as much as digits as its factorization.

442244393 is an evil number, because the sum of its binary digits is even.

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

The square root of 442244393 is about 21029.6075331900. The cubic root of 442244393 is about 761.8815297711.

The spelling of 442244393 in words is "four hundred forty-two million, two hundred forty-four thousand, three hundred ninety-three".