442381604239 has 4 divisors (see below), whose sum is σ = 461615587056. Its totient is φ = 423147621424.

The previous prime is 442381604221. The next prime is 442381604293. The reversal of 442381604239 is 932406183244.

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

It is a cyclic number.

It is not a de Polignac number, because 442381604239 - 2⁷ = 442381604111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442381604039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9616991374 + ... + 9616991419.

It is an arithmetic number, because the mean of its divisors is an integer number (115403896764).

Almost surely, 2^442381604239 is an apocalyptic number.

442381604239 is a deficient number, since it is larger than the sum of its proper divisors (19233982817).

442381604239 is a wasteful number, since it uses less digits than its factorization.

442381604239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19233982816.

The product of its (nonzero) digits is 995328, while the sum is 46.

The spelling of 442381604239 in words is "four hundred forty-two billion, three hundred eighty-one million, six hundred four thousand, two hundred thirty-nine".