9789442 has 16 divisors (see below), whose sum is σ = 16152192. Its totient is φ = 4421520.

The previous prime is 9789431. The next prime is 9789469. The reversal of 9789442 is 2449879.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2784 + ... + 5227.

It is an arithmetic number, because the mean of its divisors is an integer number (1009512).

Almost surely, 2^9789442 is an apocalyptic number.

9789442 is a deficient number, since it is larger than the sum of its proper divisors (6362750).

9789442 is a wasteful number, since it uses less digits than its factorization.

9789442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073.

The product of its digits is 145152, while the sum is 43.

The square root of 9789442 is about 3128.8083993751. The cubic root of 9789442 is about 213.9206186494.

The spelling of 9789442 in words is "nine million, seven hundred eighty-nine thousand, four hundred forty-two".