442089644 has 24 divisors (see below), whose sum is σ = 818496000. Its totient is φ = 208351440.

The previous prime is 442089541. The next prime is 442089649. The reversal of 442089644 is 446980244.

It is not an unprimeable number, because it can be changed into a prime (442089649) 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, 509 + ... + 29739.

It is an arithmetic number, because the mean of its divisors is an integer number (34104000).

Almost surely, 2^442089644 is an apocalyptic number.

It is an amenable number.

442089644 is a deficient number, since it is larger than the sum of its proper divisors (376406356).

442089644 is a wasteful number, since it uses less digits than its factorization.

442089644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29453 (or 29451 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 442089644 is about 21025.9278986683. The cubic root of 442089644 is about 761.7926542073.

The spelling of 442089644 in words is "four hundred forty-two million, eighty-nine thousand, six hundred forty-four".