442679 has 4 divisors (see below), whose sum is σ = 445800. Its totient is φ = 439560.

The previous prime is 442633. The next prime is 442691. The reversal of 442679 is 976244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442679 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 (442609) 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, 1337 + ... + 1634.

It is an arithmetic number, because the mean of its divisors is an integer number (111450).

2⁴⁴²⁶⁷⁹ is an apocalyptic number.

442679 is a deficient number, since it is larger than the sum of its proper divisors (3121).

442679 is a wasteful number, since it uses less digits than its factorization.

442679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120.

The product of its digits is 12096, while the sum is 32.

The square root of 442679 is about 665.3412658178. The cubic root of 442679 is about 76.2131022769.

The spelling of 442679 in words is "four hundred forty-two thousand, six hundred seventy-nine".