9969864 has 32 divisors (see below), whose sum is σ = 25005120. Its totient is φ = 3312576.

The previous prime is 9969859. The next prime is 9969887. The reversal of 9969864 is 4689699.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11262 + ... + 12114.

It is an arithmetic number, because the mean of its divisors is an integer number (781410).

Almost surely, 2^9969864 is an apocalyptic number.

It is an amenable number.

9969864 is an abundant number, since it is smaller than the sum of its proper divisors (15035256).

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

9969864 is a wasteful number, since it uses less digits than its factorization.

9969864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349 (or 1345 counting only the distinct ones).

The product of its digits is 839808, while the sum is 51.

The square root of 9969864 is about 3157.5091448799. The cubic root of 9969864 is about 215.2268310912.

The spelling of 9969864 in words is "nine million, nine hundred sixty-nine thousand, eight hundred sixty-four".