8986991 has 8 divisors (see below), whose sum is σ = 9796080. Its totient is φ = 8194752.

The previous prime is 8986987. The next prime is 8987023. The reversal of 8986991 is 1996898.

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 8986991 - 2² = 8986987 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 (8986921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3086 + ... + 5243.

It is an arithmetic number, because the mean of its divisors is an integer number (1224510).

Almost surely, 2^8986991 is an apocalyptic number.

8986991 is a deficient number, since it is larger than the sum of its proper divisors (809089).

8986991 is a wasteful number, since it uses less digits than its factorization.

8986991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8425.

The product of its digits is 279936, while the sum is 50.

The square root of 8986991 is about 2997.8310492755. The cubic root of 8986991 is about 207.9081124580.

The spelling of 8986991 in words is "eight million, nine hundred eighty-six thousand, nine hundred ninety-one".