9866900 has 18 divisors (see below), whose sum is σ = 21411390. Its totient is φ = 3946720.

The previous prime is 9866893. The next prime is 9866903. The reversal of 9866900 is 96689.

It can be written as a sum of positive squares in 3 ways, for example, as 44944 + 9821956 = 212^2 + 3134^2 .

It is a super-2 number, since 2×9866900² = 194711431220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9866903) 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 5 ways as a sum of consecutive naturals, for example, 49235 + ... + 49434.

Almost surely, 2^9866900 is an apocalyptic number.

It is an amenable number.

9866900 is an abundant number, since it is smaller than the sum of its proper divisors (11544490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9866900 is a wasteful number, since it uses less digits than its factorization.

9866900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98683 (or 98676 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 9866900 is about 3141.1622052992. The cubic root of 9866900 is about 214.4833457148.

The spelling of 9866900 in words is "nine million, eight hundred sixty-six thousand, nine hundred".