442855870 has 16 divisors (see below), whose sum is σ = 801274320. Its totient is φ = 176223744.

The previous prime is 442855843. The next prime is 442855871. The reversal of 442855870 is 78558244.

It is a happy number.

It is a super-2 number, since 2×442855870² = 392242643186913800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442855871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112800 + ... + 116659.

It is an arithmetic number, because the mean of its divisors is an integer number (50079645).

Almost surely, 2^442855870 is an apocalyptic number.

442855870 is a deficient number, since it is larger than the sum of its proper divisors (358418450).

442855870 is a wasteful number, since it uses less digits than its factorization.

442855870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229659.

The product of its (nonzero) digits is 358400, while the sum is 43.

The square root of 442855870 is about 21044.1409898337. The cubic root of 442855870 is about 762.2325110298.

The spelling of 442855870 in words is "four hundred forty-two million, eight hundred fifty-five thousand, eight hundred seventy".