8866491 has 4 divisors (see below), whose sum is σ = 11821992. Its totient is φ = 5910992.

The previous prime is 8866463. The next prime is 8866513. The reversal of 8866491 is 1946688.

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 8866491 - 2⁶ = 8866427 is a prime.

It is a super-2 number, since 2×8866491² = 157229325306162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8866441) 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, 1477746 + ... + 1477751.

It is an arithmetic number, because the mean of its divisors is an integer number (2955498).

Almost surely, 2^8866491 is an apocalyptic number.

8866491 is a deficient number, since it is larger than the sum of its proper divisors (2955501).

8866491 is a wasteful number, since it uses less digits than its factorization.

8866491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955500.

The product of its digits is 82944, while the sum is 42.

The square root of 8866491 is about 2977.6653606475. The cubic root of 8866491 is about 206.9746987676.

The spelling of 8866491 in words is "eight million, eight hundred sixty-six thousand, four hundred ninety-one".