9988141 has 4 divisors (see below), whose sum is σ = 10422432. Its totient is φ = 9553852.

The previous prime is 9988127. The next prime is 9988157. The reversal of 9988141 is 1418899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1418899 = 523 ⋅2713.

It is a cyclic number.

It is not a de Polignac number, because 9988141 - 2⁵ = 9988109 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9988094 and 9988103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988171) 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, 217111 + ... + 217156.

It is an arithmetic number, because the mean of its divisors is an integer number (2605608).

Almost surely, 2^9988141 is an apocalyptic number.

It is an amenable number.

9988141 is a deficient number, since it is larger than the sum of its proper divisors (434291).

9988141 is a wasteful number, since it uses less digits than its factorization.

9988141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434290.

The product of its digits is 20736, while the sum is 40.

The square root of 9988141 is about 3160.4020313878. The cubic root of 9988141 is about 215.3582705120.

The spelling of 9988141 in words is "nine million, nine hundred eighty-eight thousand, one hundred forty-one".