9999936 has 84 divisors (see below), whose sum is σ = 29770832. Its totient is φ = 3328128.

The previous prime is 9999931. The next prime is 9999937. The reversal of 9999936 is 6399999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (9999931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15231 + ... + 15873.

Almost surely, 2^9999936 is an apocalyptic number.

9999936 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14885416).

9999936 is an abundant number, since it is smaller than the sum of its proper divisors (19770896).

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

9999936 is an equidigital number, since it uses as much as digits as its factorization.

9999936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 648 counting only the distinct ones).

The product of its digits is 1062882, while the sum is 54.

The square root of 9999936 is about 3162.2675408637. The cubic root of 9999936 is about 215.4430093895.

It can be divided in two parts, 999993 and 6, that added together give a palindrome (999999).

The spelling of 9999936 in words is "nine million, nine hundred ninety-nine thousand, nine hundred thirty-six".