8894821 has 4 divisors (see below), whose sum is σ = 9579052. Its totient is φ = 8210592.

The previous prime is 8894819. The next prime is 8894839. The reversal of 8894821 is 1284988.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4950625 + 3944196 = 2225^2 + 1986^2 .

It is not a de Polignac number, because 8894821 - 2¹ = 8894819 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 (8894021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342096 + ... + 342121.

It is an arithmetic number, because the mean of its divisors is an integer number (2394763).

Almost surely, 2^8894821 is an apocalyptic number.

It is an amenable number.

8894821 is a deficient number, since it is larger than the sum of its proper divisors (684231).

8894821 is a wasteful number, since it uses less digits than its factorization.

8894821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684230.

The product of its digits is 36864, while the sum is 40.

The square root of 8894821 is about 2982.4186493516. The cubic root of 8894821 is about 207.1949046043.

The spelling of 8894821 in words is "eight million, eight hundred ninety-four thousand, eight hundred twenty-one".