442844317 has 2 divisors, whose sum is σ = 442844318. Its totient is φ = 442844316.

The previous prime is 442844291. The next prime is 442844351. The reversal of 442844317 is 713448244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347859801 + 94984516 = 18651^2 + 9746^2 .

It is a cyclic number.

It is not a de Polignac number, because 442844317 - 2¹⁹ = 442320029 is a prime.

It is a super-2 number, since 2×442844317² = 392222178198392978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442844617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221422158 + 221422159.

It is an arithmetic number, because the mean of its divisors is an integer number (221422159).

Almost surely, 2^442844317 is an apocalyptic number.

It is an amenable number.

442844317 is a deficient number, since it is larger than the sum of its proper divisors (1).

442844317 is an equidigital number, since it uses as much as digits as its factorization.

442844317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 37.

The square root of 442844317 is about 21043.8664935891. The cubic root of 442844317 is about 762.2258827267.

The spelling of 442844317 in words is "four hundred forty-two million, eight hundred forty-four thousand, three hundred seventeen".