9888842 has 8 divisors (see below), whose sum is σ = 15234276. Its totient is φ = 4810752.

The previous prime is 9888841. The next prime is 9888863. The reversal of 9888842 is 2488889.

It can be written as a sum of positive squares in 2 ways, for example, as 9541921 + 346921 = 3089^2 + 589^2 .

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

It is a super-2 number, since 2×9888842² = 195578392201928, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9888841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66743 + ... + 66890.

Almost surely, 2^9888842 is an apocalyptic number.

9888842 is a deficient number, since it is larger than the sum of its proper divisors (5345434).

9888842 is a wasteful number, since it uses less digits than its factorization.

9888842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133672.

The product of its digits is 294912, while the sum is 47.

The square root of 9888842 is about 3144.6529220249. The cubic root of 9888842 is about 214.6422172730.

Adding to 9888842 its sum of digits (47), we get a palindrome (9888889).

The spelling of 9888842 in words is "nine million, eight hundred eighty-eight thousand, eight hundred forty-two".