8880821 has 4 divisors (see below), whose sum is σ = 8901312. Its totient is φ = 8860332.

The previous prime is 8880811. The next prime is 8880853. The reversal of 8880821 is 1280888.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8880821 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 (8880811) 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 3 ways as a sum of consecutive naturals, for example, 9581 + ... + 10466.

It is an arithmetic number, because the mean of its divisors is an integer number (2225328).

Almost surely, 2^8880821 is an apocalyptic number.

It is an amenable number.

8880821 is a deficient number, since it is larger than the sum of its proper divisors (20491).

8880821 is a wasteful number, since it uses less digits than its factorization.

8880821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20490.

The product of its (nonzero) digits is 8192, while the sum is 35.

The square root of 8880821 is about 2980.0706367467. The cubic root of 8880821 is about 207.0861427430.

The spelling of 8880821 in words is "eight million, eight hundred eighty thousand, eight hundred twenty-one".