8399842 has 16 divisors (see below), whose sum is σ = 13830912. Its totient is φ = 3794320.

The previous prime is 8399837. The next prime is 8399861. The reversal of 8399842 is 2489938.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2703 + ... + 4909.

It is an arithmetic number, because the mean of its divisors is an integer number (864432).

Almost surely, 2^8399842 is an apocalyptic number.

8399842 is a deficient number, since it is larger than the sum of its proper divisors (5431070).

8399842 is a wasteful number, since it uses less digits than its factorization.

8399842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393.

The product of its digits is 124416, while the sum is 43.

The square root of 8399842 is about 2898.2480915201. The cubic root of 8399842 is about 203.2779968262.

Adding to 8399842 its product of digits (124416), we get a palindrome (8524258).

The spelling of 8399842 in words is "eight million, three hundred ninety-nine thousand, eight hundred forty-two".