9213864 has 64 divisors (see below), whose sum is σ = 26619840. Its totient is φ = 2626560.

The previous prime is 9213863. The next prime is 9213871. The reversal of 9213864 is 4683129.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (9213863) 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 15 ways as a sum of consecutive naturals, for example, 3462 + ... + 5514.

It is an arithmetic number, because the mean of its divisors is an integer number (415935).

Almost surely, 2^9213864 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 9213864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13309920).

9213864 is an abundant number, since it is smaller than the sum of its proper divisors (17405976).

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

9213864 is a wasteful number, since it uses less digits than its factorization.

9213864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090 (or 2086 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 9213864 is about 3035.4347299851. The cubic root of 9213864 is about 209.6431126474.

The spelling of 9213864 in words is "nine million, two hundred thirteen thousand, eight hundred sixty-four".