9889139 has 8 divisors (see below), whose sum is σ = 11210640. Its totient is φ = 8647776.

The previous prime is 9889123. The next prime is 9889147. The reversal of 9889139 is 9319889.

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

It is a cyclic number.

It is not a de Polignac number, because 9889139 - 2⁴ = 9889123 is a prime.

It is a super-2 number, since 2×9889139² = 195590140322642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9889093 and 9889102.

It is not an unprimeable number, because it can be changed into a prime (9889169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19772 + ... + 20265.

It is an arithmetic number, because the mean of its divisors is an integer number (1401330).

Almost surely, 2^9889139 is an apocalyptic number.

9889139 is a deficient number, since it is larger than the sum of its proper divisors (1321501).

9889139 is a wasteful number, since it uses less digits than its factorization.

9889139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40069.

The product of its digits is 139968, while the sum is 47.

The square root of 9889139 is about 3144.7001446879. The cubic root of 9889139 is about 214.6443660955.

The spelling of 9889139 in words is "nine million, eight hundred eighty-nine thousand, one hundred thirty-nine".