8718489 has 32 divisors (see below), whose sum is σ = 14179200. Its totient is φ = 5261760.

The previous prime is 8718487. The next prime is 8718491. The reversal of 8718489 is 9848178.

It is an interprime number because it is at equal distance from previous prime (8718487) and next prime (8718491).

It is not a de Polignac number, because 8718489 - 2¹ = 8718487 is a prime.

It is an Ulam number.

8718489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8718487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20499 + ... + 20919.

It is an arithmetic number, because the mean of its divisors is an integer number (443100).

Almost surely, 2^8718489 is an apocalyptic number.

It is an amenable number.

8718489 is a deficient number, since it is larger than the sum of its proper divisors (5460711).

8718489 is a wasteful number, since it uses less digits than its factorization.

8718489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 496 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 8718489 is about 2952.7087563795. The cubic root of 8718489 is about 205.8166039864.

The spelling of 8718489 in words is "eight million, seven hundred eighteen thousand, four hundred eighty-nine".