8993887 has 4 divisors (see below), whose sum is σ = 10278736. Its totient is φ = 7709040.

The previous prime is 8993869. The next prime is 8993891. The reversal of 8993887 is 7883998.

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 8993887 - 2¹¹ = 8991839 is a prime.

It is a Duffinian number.

8993887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8993807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642414 + ... + 642427.

It is an arithmetic number, because the mean of its divisors is an integer number (2569684).

Almost surely, 2^8993887 is an apocalyptic number.

8993887 is a deficient number, since it is larger than the sum of its proper divisors (1284849).

8993887 is a wasteful number, since it uses less digits than its factorization.

8993887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284848.

The product of its digits is 870912, while the sum is 52.

The square root of 8993887 is about 2998.9809936043. The cubic root of 8993887 is about 207.9612770000.

The spelling of 8993887 in words is "eight million, nine hundred ninety-three thousand, eight hundred eighty-seven".