442539961919 has 8 divisors (see below), whose sum is σ = 482828694912. Its totient is φ = 402260866840.

The previous prime is 442539961849. The next prime is 442539961921. The reversal of 442539961919 is 919169935244.

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

It is a cyclic number.

It is not a de Polignac number, because 442539961919 - 2⁸ = 442539961663 is a prime.

It is a super-2 number, since 2×442539961919² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442539961949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2313299 + ... + 2497284.

It is an arithmetic number, because the mean of its divisors is an integer number (60353586864).

Almost surely, 2^442539961919 is an apocalyptic number.

442539961919 is a deficient number, since it is larger than the sum of its proper divisors (40288732993).

442539961919 is a wasteful number, since it uses less digits than its factorization.

442539961919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4818957.

The product of its digits is 18895680, while the sum is 62.

The spelling of 442539961919 in words is "four hundred forty-two billion, five hundred thirty-nine million, nine hundred sixty-one thousand, nine hundred nineteen".