442993 has 4 divisors (see below), whose sum is σ = 446320. Its totient is φ = 439668.

The previous prime is 442991. The next prime is 442997. The reversal of 442993 is 399244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442993 - 2¹ = 442991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1455 + ... + 1732.

It is an arithmetic number, because the mean of its divisors is an integer number (111580).

2⁴⁴²⁹⁹³ is an apocalyptic number.

It is an amenable number.

442993 is a deficient number, since it is larger than the sum of its proper divisors (3327).

442993 is a wasteful number, since it uses less digits than its factorization.

442993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326.

The product of its digits is 7776, while the sum is 31.

The square root of 442993 is about 665.5771931189. The cubic root of 442993 is about 76.2311177826.

The spelling of 442993 in words is "four hundred forty-two thousand, nine hundred ninety-three".