9881943 has 8 divisors (see below), whose sum is σ = 13497456. Its totient is φ = 6427200.

The previous prime is 9881909. The next prime is 9881951. The reversal of 9881943 is 3491889.

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

It is not a de Polignac number, because 9881943 - 2⁸ = 9881687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9881895 and 9881904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9881983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40048 + ... + 40293.

It is an arithmetic number, because the mean of its divisors is an integer number (1687182).

Almost surely, 2^9881943 is an apocalyptic number.

9881943 is a deficient number, since it is larger than the sum of its proper divisors (3615513).

9881943 is a wasteful number, since it uses less digits than its factorization.

9881943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80385.

The product of its digits is 62208, while the sum is 42.

The square root of 9881943 is about 3143.5557892298. Note that the first 3 decimals coincide. The cubic root of 9881943 is about 214.5922902557.

The spelling of 9881943 in words is "nine million, eight hundred eighty-one thousand, nine hundred forty-three".