9999264 has 96 divisors (see below), whose sum is σ = 30373056. Its totient is φ = 2846720.

The previous prime is 9999233. The next prime is 9999271. The reversal of 9999264 is 4629999.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17674 + ... + 18230.

It is an arithmetic number, because the mean of its divisors is an integer number (316386).

Almost surely, 2^9999264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15186528).

9999264 is an abundant number, since it is smaller than the sum of its proper divisors (20373792).

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

9999264 is a wasteful number, since it uses less digits than its factorization.

9999264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 590 counting only the distinct ones).

The product of its digits is 314928, while the sum is 48.

The square root of 9999264 is about 3162.1612862092. The cubic root of 9999264 is about 215.4381833271.

The spelling of 9999264 in words is "nine million, nine hundred ninety-nine thousand, two hundred sixty-four".