8842421 has 8 divisors (see below), whose sum is σ = 10163520. Its totient is φ = 7535808.

The previous prime is 8842403. The next prime is 8842453. The reversal of 8842421 is 1242488.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-8842421 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 (8844421) 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 7 ways as a sum of consecutive naturals, for example, 2276 + ... + 4781.

It is an arithmetic number, because the mean of its divisors is an integer number (1270440).

Almost surely, 2^8842421 is an apocalyptic number.

It is an amenable number.

8842421 is a deficient number, since it is larger than the sum of its proper divisors (1321099).

8842421 is a wasteful number, since it uses less digits than its factorization.

8842421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7243.

The product of its digits is 4096, while the sum is 29.

The square root of 8842421 is about 2973.6208568007. The cubic root of 8842421 is about 206.7872365596.

The spelling of 8842421 in words is "eight million, eight hundred forty-two thousand, four hundred twenty-one".