442081814 has 8 divisors (see below), whose sum is σ = 664544088. Its totient is φ = 220567120.

The previous prime is 442081811. The next prime is 442081831. The reversal of 442081814 is 418180244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442081811) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 235727 + ... + 237594.

It is an arithmetic number, because the mean of its divisors is an integer number (83068011).

Almost surely, 2^442081814 is an apocalyptic number.

442081814 is a deficient number, since it is larger than the sum of its proper divisors (222462274).

442081814 is a wasteful number, since it uses less digits than its factorization.

442081814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473790.

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 442081814 is about 21025.7416991649. The cubic root of 442081814 is about 761.7881567245.

The spelling of 442081814 in words is "four hundred forty-two million, eighty-one thousand, eight hundred fourteen".