442859238 has 24 divisors (see below), whose sum is σ = 995067528. Its totient is φ = 147619584.

The previous prime is 442859237. The next prime is 442859281. The reversal of 442859238 is 832958244.

442859238 is a `hidden beast` number, since 4 + 4 + 28 + 592 + 38 = 666.

It is a super-2 number, since 2×442859238² = 392248609363881288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442859193 and 442859202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442859237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 455131 + ... + 456102.

It is an arithmetic number, because the mean of its divisors is an integer number (41461147).

Almost surely, 2^442859238 is an apocalyptic number.

442859238 is an abundant number, since it is smaller than the sum of its proper divisors (552208290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442859238 is an equidigital number, since it uses as much as digits as its factorization.

442859238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911250 (or 911238 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 442859238 is about 21044.2210119548. The cubic root of 442859238 is about 762.2344433308.

The spelling of 442859238 in words is "four hundred forty-two million, eight hundred fifty-nine thousand, two hundred thirty-eight".