442043885 has 4 divisors (see below), whose sum is σ = 530452668. Its totient is φ = 353635104.

The previous prime is 442043869. The next prime is 442043929. The reversal of 442043885 is 588340244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 223861444 + 218182441 = 14962^2 + 14771^2 .

It is a cyclic number.

It is not a de Polignac number, because 442043885 - 2⁴ = 442043869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44204384 + ... + 44204393.

It is an arithmetic number, because the mean of its divisors is an integer number (132613167).

Almost surely, 2^442043885 is an apocalyptic number.

It is an amenable number.

442043885 is a deficient number, since it is larger than the sum of its proper divisors (88408783).

442043885 is an equidigital number, since it uses as much as digits as its factorization.

442043885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88408782.

The product of its (nonzero) digits is 122880, while the sum is 38.

The square root of 442043885 is about 21024.8397140145. The cubic root of 442043885 is about 761.7663698904.

The spelling of 442043885 in words is "four hundred forty-two million, forty-three thousand, eight hundred eighty-five".