9889742 has 8 divisors (see below), whose sum is σ = 15179736. Its totient is φ = 4829832.

The previous prime is 9889741. The next prime is 9889753. The reversal of 9889742 is 2479889.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9889741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57413 + ... + 57584.

It is an arithmetic number, because the mean of its divisors is an integer number (1897467).

Almost surely, 2^9889742 is an apocalyptic number.

9889742 is a deficient number, since it is larger than the sum of its proper divisors (5289994).

9889742 is a wasteful number, since it uses less digits than its factorization.

9889742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115042.

The product of its digits is 290304, while the sum is 47.

The square root of 9889742 is about 3144.7960188222. The cubic root of 9889742 is about 214.6487287241.

The spelling of 9889742 in words is "nine million, eight hundred eighty-nine thousand, seven hundred forty-two".