8398424 has 16 divisors (see below), whose sum is σ = 15793920. Its totient is φ = 4186720.

The previous prime is 8398421. The next prime is 8398447. The reversal of 8398424 is 4248938.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8398421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694 + ... + 4434.

It is an arithmetic number, because the mean of its divisors is an integer number (987120).

Almost surely, 2^8398424 is an apocalyptic number.

It is an amenable number.

8398424 is a deficient number, since it is larger than the sum of its proper divisors (7395496).

8398424 is a wasteful number, since it uses less digits than its factorization.

8398424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130 (or 3126 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 8398424 is about 2898.0034506536. The cubic root of 8398424 is about 203.2665575467.

The spelling of 8398424 in words is "eight million, three hundred ninety-eight thousand, four hundred twenty-four".