442385738 has 4 divisors (see below), whose sum is σ = 663578610. Its totient is φ = 221192868.

The previous prime is 442385737. The next prime is 442385771. The reversal of 442385738 is 837583244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 397723249 + 44662489 = 19943^2 + 6683^2 .

It is not an unprimeable number, because it can be changed into a prime (442385731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110596433 + ... + 110596436.

Almost surely, 2^442385738 is an apocalyptic number.

442385738 is a deficient number, since it is larger than the sum of its proper divisors (221192872).

442385738 is a wasteful number, since it uses less digits than its factorization.

442385738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221192871.

The product of its digits is 645120, while the sum is 44.

The square root of 442385738 is about 21032.9678837771. The cubic root of 442385738 is about 761.9626890244.

The spelling of 442385738 in words is "four hundred forty-two million, three hundred eighty-five thousand, seven hundred thirty-eight".