8915989 has 8 divisors (see below), whose sum is σ = 9097920. Its totient is φ = 8736096.

The previous prime is 8915981. The next prime is 8915993. The reversal of 8915989 is 9895198.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8915989 - 2³ = 8915981 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 (8915981) 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 7 ways as a sum of consecutive naturals, for example, 10617 + ... + 11425.

It is an arithmetic number, because the mean of its divisors is an integer number (1137240).

Almost surely, 2^8915989 is an apocalyptic number.

It is an amenable number.

8915989 is a deficient number, since it is larger than the sum of its proper divisors (181931).

8915989 is a wasteful number, since it uses less digits than its factorization.

8915989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019.

The product of its digits is 233280, while the sum is 49.

The square root of 8915989 is about 2985.9653380440. The cubic root of 8915989 is about 207.3591360197.

The spelling of 8915989 in words is "eight million, nine hundred fifteen thousand, nine hundred eighty-nine".