8689387 has 4 divisors (see below), whose sum is σ = 9930736. Its totient is φ = 7448040.

The previous prime is 8689349. The next prime is 8689399. The reversal of 8689387 is 7839868.

It is a happy number.

8689387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8689387 - 2⁷ = 8689259 is a prime.

It is a Duffinian number.

8689387 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8689387.

It is not an unprimeable number, because it can be changed into a prime (8689687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620664 + ... + 620677.

It is an arithmetic number, because the mean of its divisors is an integer number (2482684).

Almost surely, 2^8689387 is an apocalyptic number.

8689387 is a deficient number, since it is larger than the sum of its proper divisors (1241349).

8689387 is a wasteful number, since it uses less digits than its factorization.

8689387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241348.

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

The square root of 8689387 is about 2947.7766197594. The cubic root of 8689387 is about 205.5873459259.

The spelling of 8689387 in words is "eight million, six hundred eighty-nine thousand, three hundred eighty-seven".