442927816 has 8 divisors (see below), whose sum is σ = 830489670. Its totient is φ = 221463904.

The previous prime is 442927801. The next prime is 442927831. The reversal of 442927816 is 618729244.

It is an interprime number because it is at equal distance from previous prime (442927801) and next prime (442927831).

It can be written as a sum of positive squares in only one way, i.e., 417384900 + 25542916 = 20430^2 + 5054^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27682981 + ... + 27682996.

Almost surely, 2^442927816 is an apocalyptic number.

It is an amenable number.

442927816 is a deficient number, since it is larger than the sum of its proper divisors (387561854).

442927816 is a wasteful number, since it uses less digits than its factorization.

442927816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55365983 (or 55365979 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 442927816 is about 21045.8503273211. The cubic root of 442927816 is about 762.2737860167.

The spelling of 442927816 in words is "four hundred forty-two million, nine hundred twenty-seven thousand, eight hundred sixteen".