442402444 has 12 divisors (see below), whose sum is σ = 844586568. Its totient is φ = 201092000.

The previous prime is 442402421. The next prime is 442402463. The reversal of 442402444 is 444204244.

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, 5027257 + ... + 5027344.

It is an arithmetic number, because the mean of its divisors is an integer number (70382214).

Almost surely, 2^442402444 is an apocalyptic number.

442402444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

442402444 is a deficient number, since it is larger than the sum of its proper divisors (402184124).

442402444 is a wasteful number, since it uses less digits than its factorization.

442402444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10054616 (or 10054614 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 442402444 is about 21033.3650184653. The cubic root of 442402444 is about 761.9722803436.

Adding to 442402444 its reverse (444204244), we get a palindrome (886606688).

The spelling of 442402444 in words is "four hundred forty-two million, four hundred two thousand, four hundred forty-four".