9889042 has 4 divisors (see below), whose sum is σ = 14833566. Its totient is φ = 4944520.

The previous prime is 9889039. The next prime is 9889051. The reversal of 9889042 is 2409889.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2409889 = 257 ⋅9377.

It can be written as a sum of positive squares in only one way, i.e., 9853321 + 35721 = 3139^2 + 189^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9888986 and 9889004.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2472259 + ... + 2472262.

Almost surely, 2^9889042 is an apocalyptic number.

9889042 is a deficient number, since it is larger than the sum of its proper divisors (4944524).

9889042 is a wasteful number, since it uses less digits than its factorization.

9889042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4944523.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 9889042 is about 3144.6847218759. The cubic root of 9889042 is about 214.6436642963.

It can be divided in two parts, 98 and 89042, that multiplied together give a square (8726116 = 2954²).

The spelling of 9889042 in words is "nine million, eight hundred eighty-nine thousand, forty-two".