8397487 has 16 divisors (see below), whose sum is σ = 10216960. Its totient is φ = 6741792.

The previous prime is 8397457. The next prime is 8397509. The reversal of 8397487 is 7847938.

8397487 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8397487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8397437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13393 + ... + 14005.

It is an arithmetic number, because the mean of its divisors is an integer number (638560).

Almost surely, 2^8397487 is an apocalyptic number.

8397487 is a deficient number, since it is larger than the sum of its proper divisors (1819473).

8397487 is a wasteful number, since it uses less digits than its factorization.

8397487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its digits is 338688, while the sum is 46.

The square root of 8397487 is about 2897.8417831207. The cubic root of 8397487 is about 203.2589978804.

The spelling of 8397487 in words is "eight million, three hundred ninety-seven thousand, four hundred eighty-seven".