8921804 has 12 divisors (see below), whose sum is σ = 16531704. Its totient is φ = 4198464.

The previous prime is 8921791. The next prime is 8921833. The reversal of 8921804 is 4081298.

8921804 = T₁₀₁₆ + T₁₀₁₇ + ... + T₁₀₃₂.

It is a happy number.

It is a super-2 number, since 2×8921804² = 159197173228832, which contains 22 as substring.

It is a zygodrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65534 + ... + 65669.

It is an arithmetic number, because the mean of its divisors is an integer number (1377642).

Almost surely, 2^8921804 is an apocalyptic number.

It is an amenable number.

8921804 is a deficient number, since it is larger than the sum of its proper divisors (7609900).

8921804 is a wasteful number, since it uses less digits than its factorization.

8921804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131224 (or 131222 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 8921804 is about 2986.9389012834. The cubic root of 8921804 is about 207.4042060368.

The spelling of 8921804 in words is "eight million, nine hundred twenty-one thousand, eight hundred four".