8398724 has 12 divisors (see below), whose sum is σ = 14939148. Its totient is φ = 4130400.

The previous prime is 8398721. The next prime is 8398739. The reversal of 8398724 is 4278938.

It can be written as a sum of positive squares in 2 ways, for example, as 4326400 + 4072324 = 2080^2 + 2018^2 .

It is not an unprimeable number, because it can be changed into a prime (8398721) 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, 16967 + ... + 17454.

It is an arithmetic number, because the mean of its divisors is an integer number (1244929).

Almost surely, 2^8398724 is an apocalyptic number.

It is an amenable number.

8398724 is a deficient number, since it is larger than the sum of its proper divisors (6540424).

8398724 is a wasteful number, since it uses less digits than its factorization.

8398724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34486 (or 34484 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 8398724 is about 2898.0552099641. The cubic root of 8398724 is about 203.2689778120.

The spelling of 8398724 in words is "eight million, three hundred ninety-eight thousand, seven hundred twenty-four".