442441019 has 2 divisors, whose sum is σ = 442441020. Its totient is φ = 442441018.

The previous prime is 442441007. The next prime is 442441039. The reversal of 442441019 is 910144244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442441019 - 2⁴ = 442441003 is a prime.

It is a super-2 number, since 2×442441019² = 391508110587516722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442440982 and 442441000.

It is not a weakly prime, because it can be changed into another prime (442441039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221220509 + 221220510.

It is an arithmetic number, because the mean of its divisors is an integer number (221220510).

Almost surely, 2^442441019 is an apocalyptic number.

442441019 is a deficient number, since it is larger than the sum of its proper divisors (1).

442441019 is an equidigital number, since it uses as much as digits as its factorization.

442441019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 442441019 is about 21034.2819939260. The cubic root of 442441019 is about 761.9944262629.

The spelling of 442441019 in words is "four hundred forty-two million, four hundred forty-one thousand, nineteen".