9807842 has 32 divisors (see below), whose sum is σ = 16879104. Its totient is φ = 4233600.

The previous prime is 9807823. The next prime is 9807851. The reversal of 9807842 is 2487089.

It is a junction number, because it is equal to n+sod(n) for n = 9807796 and 9807805.

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 15 ways as a sum of consecutive naturals, for example, 49688 + ... + 49884.

It is an arithmetic number, because the mean of its divisors is an integer number (527472).

Almost surely, 2^9807842 is an apocalyptic number.

9807842 is a deficient number, since it is larger than the sum of its proper divisors (7071262).

9807842 is a wasteful number, since it uses less digits than its factorization.

9807842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 9807842 is about 3131.7474355382. The cubic root of 9807842 is about 214.0545614510.

It can be divided in two parts, 980 and 7842, that multiplied together give a triangular number (7685160 = T₃₉₂₀).

The spelling of 9807842 in words is "nine million, eight hundred seven thousand, eight hundred forty-two".