442248893 has 2 divisors, whose sum is σ = 442248894. Its totient is φ = 442248892.

The previous prime is 442248889. The next prime is 442248929. The reversal of 442248893 is 398842244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391169284 + 51079609 = 19778^2 + 7147^2 .

It is a cyclic number.

It is not a de Polignac number, because 442248893 - 2² = 442248889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442248823) 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, 221124446 + 221124447.

It is an arithmetic number, because the mean of its divisors is an integer number (221124447).

Almost surely, 2^442248893 is an apocalyptic number.

It is an amenable number.

442248893 is a deficient number, since it is larger than the sum of its proper divisors (1).

442248893 is an equidigital number, since it uses as much as digits as its factorization.

442248893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442368, while the sum is 44.

The square root of 442248893 is about 21029.7145249288. The cubic root of 442248893 is about 761.8841139043.

The spelling of 442248893 in words is "four hundred forty-two million, two hundred forty-eight thousand, eight hundred ninety-three".