442863 has 6 divisors (see below), whose sum is σ = 639704. Its totient is φ = 295236.

The previous prime is 442861. The next prime is 442879. The reversal of 442863 is 368244.

It is not a de Polignac number, because 442863 - 2¹ = 442861 is a prime.

It is a super-2 number, since 2×442863² = 392255273538, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 3 and base 9.

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24595 + ... + 24612.

2⁴⁴²⁸⁶³ is an apocalyptic number.

442863 is a deficient number, since it is larger than the sum of its proper divisors (196841).

442863 is a wasteful number, since it uses less digits than its factorization.

442863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49213 (or 49210 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 442863 is about 665.4795263567. The cubic root of 442863 is about 76.2236601667.

The spelling of 442863 in words is "four hundred forty-two thousand, eight hundred sixty-three".