9213904 has 20 divisors (see below), whose sum is σ = 20402464. Its totient is φ = 3948768.

The previous prime is 9213871. The next prime is 9213923. The reversal of 9213904 is 4093129.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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, 41022 + ... + 41245.

Almost surely, 2^9213904 is an apocalyptic number.

It is an amenable number.

9213904 is an abundant number, since it is smaller than the sum of its proper divisors (11188560).

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

9213904 is a wasteful number, since it uses less digits than its factorization.

9213904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82282 (or 82276 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 9213904 is about 3035.4413188200. The cubic root of 9213904 is about 209.6434160204.

The spelling of 9213904 in words is "nine million, two hundred thirteen thousand, nine hundred four".