9842805 has 24 divisors (see below), whose sum is σ = 19498752. Its totient is φ = 4499424.

The previous prime is 9842773. The next prime is 9842831. The reversal of 9842805 is 5082489.

It is not a de Polignac number, because 9842805 - 2⁵ = 9842773 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9842805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15309 + ... + 15938.

It is an arithmetic number, because the mean of its divisors is an integer number (812448).

Almost surely, 2^9842805 is an apocalyptic number.

It is an amenable number.

9842805 is a deficient number, since it is larger than the sum of its proper divisors (9655947).

9842805 is a wasteful number, since it uses less digits than its factorization.

9842805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31265 (or 31262 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 9842805 is about 3137.3244970835. The cubic root of 9842805 is about 214.3086137433.

The spelling of 9842805 in words is "nine million, eight hundred forty-two thousand, eight hundred five".