9859842 has 12 divisors (see below), whose sum is σ = 21363030. Its totient is φ = 3286608.

The previous prime is 9859831. The next prime is 9859849. The reversal of 9859842 is 2489589.

It can be written as a sum of positive squares in only one way, i.e., 5103081 + 4756761 = 2259^2 + 2181^2 .

It is not an unprimeable number, because it can be changed into a prime (9859849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 273867 + ... + 273902.

Almost surely, 2^9859842 is an apocalyptic number.

9859842 is an abundant number, since it is smaller than the sum of its proper divisors (11503188).

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

9859842 is a wasteful number, since it uses less digits than its factorization.

9859842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547777 (or 547774 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 9859842 is about 3140.0385347954. The cubic root of 9859842 is about 214.4321920409.

It can be divided in two parts, 9859 and 842, that added together give a palindrome (10701).

The spelling of 9859842 in words is "nine million, eight hundred fifty-nine thousand, eight hundred forty-two".