442404004 has 12 divisors (see below), whose sum is σ = 884808064. Its totient is φ = 189601704.

The previous prime is 442403993. The next prime is 442404013. The reversal of 442404004 is 400404244.

442404004 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7900044 + ... + 7900099.

Almost surely, 2^442404004 is an apocalyptic number.

It is an amenable number.

442404004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442404004 is a wasteful number, since it uses less digits than its factorization.

442404004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15800154 (or 15800152 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 442404004 is about 21033.4021023704. The cubic root of 442404004 is about 761.9731759651.

Adding to 442404004 its reverse (400404244), we get a palindrome (842808248).

The spelling of 442404004 in words is "four hundred forty-two million, four hundred four thousand, four".