442304009 has 8 divisors (see below), whose sum is σ = 508518528. Its totient is φ = 376846560.

The previous prime is 442304003. The next prime is 442304029. The reversal of 442304009 is 900403244.

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 442304009 - 2⁴ = 442303993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442304003) 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, 188012 + ... + 190349.

It is an arithmetic number, because the mean of its divisors is an integer number (63564816).

Almost surely, 2^442304009 is an apocalyptic number.

It is an amenable number.

442304009 is a deficient number, since it is larger than the sum of its proper divisors (66214519).

442304009 is a wasteful number, since it uses less digits than its factorization.

442304009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378535.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 442304009 is about 21031.0249155860. The cubic root of 442304009 is about 761.9157629456.

The spelling of 442304009 in words is "four hundred forty-two million, three hundred four thousand, nine".