8414821 has 4 divisors (see below), whose sum is σ = 8446144. Its totient is φ = 8383500.

The previous prime is 8414807. The next prime is 8414831. The reversal of 8414821 is 1284148.

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 not a de Polignac number, because 8414821 - 2⁹ = 8414309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8414821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8414831) 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, 15255 + ... + 15796.

It is an arithmetic number, because the mean of its divisors is an integer number (2111536).

Almost surely, 2^8414821 is an apocalyptic number.

It is an amenable number.

8414821 is a deficient number, since it is larger than the sum of its proper divisors (31323).

8414821 is a wasteful number, since it uses less digits than its factorization.

8414821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31322.

The product of its digits is 2048, while the sum is 28.

The square root of 8414821 is about 2900.8310878091. The cubic root of 8414821 is about 203.3987567551.

Adding to 8414821 its reverse (1284148), we get a palindrome (9698969).

The spelling of 8414821 in words is "eight million, four hundred fourteen thousand, eight hundred twenty-one".