9881839 has 8 divisors (see below), whose sum is σ = 11128320. Its totient is φ = 8693400.

The previous prime is 9881827. The next prime is 9881857. The reversal of 9881839 is 9381889.

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 9881839 - 2²¹ = 7784687 is a prime.

It is a Duffinian number.

9881839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9881819) 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, 14149 + ... + 14830.

It is an arithmetic number, because the mean of its divisors is an integer number (1391040).

Almost surely, 2^9881839 is an apocalyptic number.

9881839 is a deficient number, since it is larger than the sum of its proper divisors (1246481).

9881839 is a wasteful number, since it uses less digits than its factorization.

9881839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29021.

The product of its digits is 124416, while the sum is 46.

The square root of 9881839 is about 3143.5392474089. The cubic root of 9881839 is about 214.5915374457.

The spelling of 9881839 in words is "nine million, eight hundred eighty-one thousand, eight hundred thirty-nine".