8841421 has 4 divisors (see below), whose sum is σ = 8862844. Its totient is φ = 8820000.

The previous prime is 8841389. The next prime is 8841431. The reversal of 8841421 is 1241488.

8841421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 656100 + 8185321 = 810^2 + 2861^2 .

It is a 4-Lehmer number, since φ(8841421) divides (8841421-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 8841421 - 2⁵ = 8841389 is a prime.

It is an Ulam number.

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 8841421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8841431) 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, 10080 + ... + 10921.

It is an arithmetic number, because the mean of its divisors is an integer number (2215711).

Almost surely, 2^8841421 is an apocalyptic number.

It is an amenable number.

8841421 is a deficient number, since it is larger than the sum of its proper divisors (21423).

8841421 is a wasteful number, since it uses less digits than its factorization.

8841421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21422.

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

The square root of 8841421 is about 2973.4527068713. The cubic root of 8841421 is about 206.7794409935.

The spelling of 8841421 in words is "eight million, eight hundred forty-one thousand, four hundred twenty-one".