8084821 has 4 divisors (see below), whose sum is σ = 8092000. Its totient is φ = 8077644.

The previous prime is 8084803. The next prime is 8084837. The reversal of 8084821 is 1284808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8084821 - 2⁹ = 8084309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8084801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491 + ... + 4288.

It is an arithmetic number, because the mean of its divisors is an integer number (2023000).

Almost surely, 2^8084821 is an apocalyptic number.

It is an amenable number.

8084821 is a deficient number, since it is larger than the sum of its proper divisors (7179).

8084821 is a wasteful number, since it uses less digits than its factorization.

8084821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7178.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 8084821 is about 2843.3819651957. The cubic root of 8084821 is about 200.7043581526.

The spelling of 8084821 in words is "eight million, eighty-four thousand, eight hundred twenty-one".