442075408 has 20 divisors (see below), whose sum is σ = 879671500. Its totient is φ = 215063424.

The previous prime is 442075393. The next prime is 442075411. The reversal of 442075408 is 804570244.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 379158784 + 62916624 = 19472^2 + 7932^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372783 + ... + 373966.

It is an arithmetic number, because the mean of its divisors is an integer number (43983575).

Almost surely, 2^442075408 is an apocalyptic number.

It is an amenable number.

442075408 is a deficient number, since it is larger than the sum of its proper divisors (437596092).

442075408 is a wasteful number, since it uses less digits than its factorization.

442075408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746794 (or 746788 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 442075408 is about 21025.5893615375. The cubic root of 442075408 is about 761.7844771352.

The spelling of 442075408 in words is "four hundred forty-two million, seventy-five thousand, four hundred eight".