9881845 has 8 divisors (see below), whose sum is σ = 12555864. Its totient is φ = 7440384.

The previous prime is 9881827. The next prime is 9881857. The reversal of 9881845 is 5481889.

It can be written as a sum of positive squares in 4 ways, for example, as 603729 + 9278116 = 777^2 + 3046^2 .

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 9881845 - 2¹³ = 9873653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 58044 + ... + 58213.

It is an arithmetic number, because the mean of its divisors is an integer number (1569483).

Almost surely, 2^9881845 is an apocalyptic number.

It is an amenable number.

9881845 is a deficient number, since it is larger than the sum of its proper divisors (2674019).

9881845 is a wasteful number, since it uses less digits than its factorization.

9881845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116279.

The product of its digits is 92160, while the sum is 43.

The square root of 9881845 is about 3143.5402017471. The cubic root of 9881845 is about 214.5915808772.

The spelling of 9881845 in words is "nine million, eight hundred eighty-one thousand, eight hundred forty-five".