442404446 has 8 divisors (see below), whose sum is σ = 723934584. Its totient is φ = 201092920.

The previous prime is 442404439. The next prime is 442404461. The reversal of 442404446 is 644404244.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10054625 + ... + 10054668.

It is an arithmetic number, because the mean of its divisors is an integer number (90491823).

Almost surely, 2^442404446 is an apocalyptic number.

442404446 is a deficient number, since it is larger than the sum of its proper divisors (281530138).

442404446 is a wasteful number, since it uses less digits than its factorization.

442404446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20109306.

The product of its (nonzero) digits is 49152, while the sum is 32.

The square root of 442404446 is about 21033.4126094650. The cubic root of 442404446 is about 761.9734297241.

The spelling of 442404446 in words is "four hundred forty-two million, four hundred four thousand, four hundred forty-six".