9869866 has 8 divisors (see below), whose sum is σ = 14835744. Its totient is φ = 4924620.

The previous prime is 9869863. The next prime is 9869869. The reversal of 9869866 is 6689689.

It is an interprime number because it is at equal distance from previous prime (9869863) and next prime (9869869).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9869863) 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 3 ways as a sum of consecutive naturals, for example, 3900 + ... + 5911.

It is an arithmetic number, because the mean of its divisors is an integer number (1854468).

Almost surely, 2^9869866 is an apocalyptic number.

9869866 is a deficient number, since it is larger than the sum of its proper divisors (4965878).

9869866 is a wasteful number, since it uses less digits than its factorization.

9869866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10316.

The product of its digits is 1119744, while the sum is 52.

The square root of 9869866 is about 3141.6342880736. The cubic root of 9869866 is about 214.5048348644.

The spelling of 9869866 in words is "nine million, eight hundred sixty-nine thousand, eight hundred sixty-six".