442879039 has 8 divisors (see below), whose sum is σ = 458489520. Its totient is φ = 427291200.

The previous prime is 442879033. The next prime is 442879057. The reversal of 442879039 is 930978244.

It is a happy number.

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 442879039 - 2¹³ = 442870847 is a prime.

It is a super-3 number, since 3×442879039³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442879039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442879033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40699 + ... + 50419.

It is an arithmetic number, because the mean of its divisors is an integer number (57311190).

Almost surely, 2^442879039 is an apocalyptic number.

442879039 is a deficient number, since it is larger than the sum of its proper divisors (15610481).

442879039 is a wasteful number, since it uses less digits than its factorization.

442879039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11321.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 442879039 is about 21044.6914683965. The cubic root of 442879039 is about 762.2458034335.

The spelling of 442879039 in words is "four hundred forty-two million, eight hundred seventy-nine thousand, thirty-nine".