442649204 has 24 divisors (see below), whose sum is σ = 796771080. Its totient is φ = 215018496.

The previous prime is 442649203. The next prime is 442649231. The reversal of 442649204 is 402946244.

It can be written as a sum of positive squares in 4 ways, for example, as 139192804 + 303456400 = 11798^2 + 17420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442649201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117884 + ... + 121580.

It is an arithmetic number, because the mean of its divisors is an integer number (33198795).

Almost surely, 2^442649204 is an apocalyptic number.

It is an amenable number.

442649204 is a deficient number, since it is larger than the sum of its proper divisors (354121876).

442649204 is a wasteful number, since it uses less digits than its factorization.

442649204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547 (or 4545 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 442649204 is about 21039.2301189944. The cubic root of 442649204 is about 762.1139231208.

The spelling of 442649204 in words is "four hundred forty-two million, six hundred forty-nine thousand, two hundred four".