442438873 has 2 divisors, whose sum is σ = 442438874. Its totient is φ = 442438872.

The previous prime is 442438861. The next prime is 442438891. The reversal of 442438873 is 378834244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248755984 + 193682889 = 15772^2 + 13917^2 .

It is a cyclic number.

It is not a de Polignac number, because 442438873 - 2⁹ = 442438361 is a prime.

It is not a weakly prime, because it can be changed into another prime (442438813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221219436 + 221219437.

It is an arithmetic number, because the mean of its divisors is an integer number (221219437).

Almost surely, 2^442438873 is an apocalyptic number.

It is an amenable number.

442438873 is a deficient number, since it is larger than the sum of its proper divisors (1).

442438873 is an equidigital number, since it uses as much as digits as its factorization.

442438873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 43.

The square root of 442438873 is about 21034.2309819019. The cubic root of 442438873 is about 761.9931942775.

The spelling of 442438873 in words is "four hundred forty-two million, four hundred thirty-eight thousand, eight hundred seventy-three".