9993860 has 12 divisors (see below), whose sum is σ = 20987148. Its totient is φ = 3997536.

The previous prime is 9993857. The next prime is 9993869. The reversal of 9993860 is 683999.

9993860 = 227² + 228² + ... + 346².

It can be written as a sum of positive squares in 2 ways, for example, as 6980164 + 3013696 = 2642^2 + 1736^2 .

It is not an unprimeable number, because it can be changed into a prime (9993869) 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, 249827 + ... + 249866.

It is an arithmetic number, because the mean of its divisors is an integer number (1748929).

Almost surely, 2^9993860 is an apocalyptic number.

It is an amenable number.

9993860 is an abundant number, since it is smaller than the sum of its proper divisors (10993288).

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

9993860 is a wasteful number, since it uses less digits than its factorization.

9993860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499702 (or 499700 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 9993860 is about 3161.3066918602. The cubic root of 9993860 is about 215.3993658789.

The spelling of 9993860 in words is "nine million, nine hundred ninety-three thousand, eight hundred sixty".