442611387 has 6 divisors (see below), whose sum is σ = 639327572. Its totient is φ = 295074252.

The previous prime is 442611349. The next prime is 442611401. The reversal of 442611387 is 783116244.

442611387 is a `hidden beast` number, since 4 + 4 + 2 + 611 + 38 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-442611387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442611307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24589513 + ... + 24589530.

Almost surely, 2^442611387 is an apocalyptic number.

442611387 is a deficient number, since it is larger than the sum of its proper divisors (196716185).

442611387 is a wasteful number, since it uses less digits than its factorization.

442611387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49179049 (or 49179046 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 442611387 is about 21038.3313739469. The cubic root of 442611387 is about 762.0922191901.

The spelling of 442611387 in words is "four hundred forty-two million, six hundred eleven thousand, three hundred eighty-seven".