442883815 has 8 divisors (see below), whose sum is σ = 579775248. Its totient is φ = 322097280.

The previous prime is 442883809. The next prime is 442883893. The reversal of 442883815 is 518388244.

It is a happy number.

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

It is not a de Polignac number, because 442883815 - 2⁵ = 442883783 is a prime.

It is a super-2 number, since 2×442883815² = 392292147177908450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4026162 + ... + 4026271.

It is an arithmetic number, because the mean of its divisors is an integer number (72471906).

Almost surely, 2^442883815 is an apocalyptic number.

442883815 is a deficient number, since it is larger than the sum of its proper divisors (136891433).

442883815 is a wasteful number, since it uses less digits than its factorization.

442883815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052449.

The product of its digits is 245760, while the sum is 43.

The square root of 442883815 is about 21044.8049408874. The cubic root of 442883815 is about 762.2485434389.

The spelling of 442883815 in words is "four hundred forty-two million, eight hundred eighty-three thousand, eight hundred fifteen".