442858984 has 8 divisors (see below), whose sum is σ = 830360610. Its totient is φ = 221429488.

The previous prime is 442858981. The next prime is 442859041. The reversal of 442858984 is 489858244.

It can be written as a sum of positive squares in only one way, i.e., 321198084 + 121660900 = 17922^2 + 11030^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×442858984² = 392248159419024512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442858981) 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 as a sum of consecutive naturals, namely, 27678679 + ... + 27678694.

Almost surely, 2^442858984 is an apocalyptic number.

It is an amenable number.

442858984 is a deficient number, since it is larger than the sum of its proper divisors (387501626).

442858984 is a wasteful number, since it uses less digits than its factorization.

442858984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55357379 (or 55357375 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 52.

The square root of 442858984 is about 21044.2149770430. The cubic root of 442858984 is about 762.2342976054.

The spelling of 442858984 in words is "four hundred forty-two million, eight hundred fifty-eight thousand, nine hundred eighty-four".