9905982 has 16 divisors (see below), whose sum is σ = 20148480. Its totient is φ = 3245912.

The previous prime is 9905981. The next prime is 9905989. The reversal of 9905982 is 2895099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9905981) 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, 13638 + ... + 14345.

It is an arithmetic number, because the mean of its divisors is an integer number (1259280).

Almost surely, 2^9905982 is an apocalyptic number.

9905982 is an abundant number, since it is smaller than the sum of its proper divisors (10242498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9905982 is a wasteful number, since it uses less digits than its factorization.

9905982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28047.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 9905982 is about 3147.3770031568. The cubic root of 9905982 is about 214.7661564260.

The spelling of 9905982 in words is "nine million, nine hundred five thousand, nine hundred eighty-two".