8886991 has 4 divisors (see below), whose sum is σ = 8919352. Its totient is φ = 8854632.

The previous prime is 8886973. The next prime is 8887001. The reversal of 8886991 is 1996888.

It is a happy number.

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 8886991 - 2⁵ = 8886959 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 (8886931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15765 + ... + 16318.

It is an arithmetic number, because the mean of its divisors is an integer number (2229838).

Almost surely, 2^8886991 is an apocalyptic number.

8886991 is a deficient number, since it is larger than the sum of its proper divisors (32361).

8886991 is a wasteful number, since it uses less digits than its factorization.

8886991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32360.

The product of its digits is 248832, while the sum is 49.

The square root of 8886991 is about 2981.1056673657. The cubic root of 8886991 is about 207.1340897257.

The spelling of 8886991 in words is "eight million, eight hundred eighty-six thousand, nine hundred ninety-one".