442869 has 8 divisors (see below), whose sum is σ = 674880. Its totient is φ = 253056.

The previous prime is 442861. The next prime is 442879. The reversal of 442869 is 968244.

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

It is not a de Polignac number, because 442869 - 2³ = 442861 is a prime.

It is a super-2 number, since 2×442869² = 392265902322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10524 + ... + 10565.

It is an arithmetic number, because the mean of its divisors is an integer number (84360).

2⁴⁴²⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

442869 is a deficient number, since it is larger than the sum of its proper divisors (232011).

442869 is a wasteful number, since it uses less digits than its factorization.

442869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21099.

The product of its digits is 13824, while the sum is 33.

The square root of 442869 is about 665.4840343690. The cubic root of 442869 is about 76.2240043965.

The spelling of 442869 in words is "four hundred forty-two thousand, eight hundred sixty-nine".