8687389 has 8 divisors (see below), whose sum is σ = 9318240. Its totient is φ = 8073936.

The previous prime is 8687387. The next prime is 8687401. The reversal of 8687389 is 9837868.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8687389 - 2¹ = 8687387 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 (8687381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3307 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (1164780).

Almost surely, 2^8687389 is an apocalyptic number.

It is an amenable number.

8687389 is a deficient number, since it is larger than the sum of its proper divisors (630851).

8687389 is a wasteful number, since it uses less digits than its factorization.

8687389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8699.

The product of its digits is 580608, while the sum is 49.

The square root of 8687389 is about 2947.4377007835. The cubic root of 8687389 is about 205.5715874302.

The spelling of 8687389 in words is "eight million, six hundred eighty-seven thousand, three hundred eighty-nine".