442791604 has 12 divisors (see below), whose sum is σ = 801605700. Its totient is φ = 213761408.

The previous prime is 442791553. The next prime is 442791611. The reversal of 442791604 is 406197244.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70224400 + 372567204 = 8380^2 + 19302^2 .

It is a congruent 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, 1908469 + ... + 1908700.

It is an arithmetic number, because the mean of its divisors is an integer number (66800475).

Almost surely, 2^442791604 is an apocalyptic number.

It is an amenable number.

442791604 is a deficient number, since it is larger than the sum of its proper divisors (358814096).

442791604 is a wasteful number, since it uses less digits than its factorization.

442791604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817202 (or 3817200 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 442791604 is about 21042.6140011169. The cubic root of 442791604 is about 762.1956382324.

The spelling of 442791604 in words is "four hundred forty-two million, seven hundred ninety-one thousand, six hundred four".