8999887 has 4 divisors (see below), whose sum is σ = 9692200. Its totient is φ = 8307576.

The previous prime is 8999867. The next prime is 8999897. The reversal of 8999887 is 7889998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7889998 = 2 ⋅3944999.

It is a cyclic number.

It is not a de Polignac number, because 8999887 - 2²³ = 611279 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 (8999867) 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, 346137 + ... + 346162.

It is an arithmetic number, because the mean of its divisors is an integer number (2423050).

Almost surely, 2^8999887 is an apocalyptic number.

8999887 is a deficient number, since it is larger than the sum of its proper divisors (692313).

8999887 is a wasteful number, since it uses less digits than its factorization.

8999887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692312.

The product of its digits is 2612736, while the sum is 58.

The square root of 8999887 is about 2999.9811666076. The cubic root of 8999887 is about 208.0075117479.

The spelling of 8999887 in words is "eight million, nine hundred ninety-nine thousand, eight hundred eighty-seven".