442870858 has 16 divisors (see below), whose sum is σ = 680150664. Its totient is φ = 216207360.

The previous prime is 442870847. The next prime is 442870891. The reversal of 442870858 is 858078244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 373764889 + 69105969 = 19333^2 + 8313^2 .

It is a super-2 number, since 2×442870858² = 392269193731312328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3466 + ... + 29962.

Almost surely, 2^442870858 is an apocalyptic number.

442870858 is a deficient number, since it is larger than the sum of its proper divisors (237279806).

442870858 is a wasteful number, since it uses less digits than its factorization.

442870858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26697.

The product of its (nonzero) digits is 573440, while the sum is 46.

The square root of 442870858 is about 21044.4970954404. The cubic root of 442870858 is about 762.2411099237.

The spelling of 442870858 in words is "four hundred forty-two million, eight hundred seventy thousand, eight hundred fifty-eight".