442217879 has 8 divisors (see below), whose sum is σ = 446214912. Its totient is φ = 438230520.

The previous prime is 442217873. The next prime is 442217887. The reversal of 442217879 is 978712244.

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 442217879 - 2⁸ = 442217623 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 (442217873) 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, 113762 + ... + 117584.

It is an arithmetic number, because the mean of its divisors is an integer number (55776864).

Almost surely, 2^442217879 is an apocalyptic number.

442217879 is a deficient number, since it is larger than the sum of its proper divisors (3997033).

442217879 is a wasteful number, since it uses less digits than its factorization.

442217879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837.

The product of its digits is 225792, while the sum is 44.

The square root of 442217879 is about 21028.9771268124. The cubic root of 442217879 is about 761.8663037023.

The spelling of 442217879 in words is "four hundred forty-two million, two hundred seventeen thousand, eight hundred seventy-nine".