8421059 has 4 divisors (see below), whose sum is σ = 8787216. Its totient is φ = 8054904.

The previous prime is 8421041. The next prime is 8421067. The reversal of 8421059 is 9501248.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8421059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8421079) 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, 183044 + ... + 183089.

It is an arithmetic number, because the mean of its divisors is an integer number (2196804).

Almost surely, 2^8421059 is an apocalyptic number.

8421059 is a deficient number, since it is larger than the sum of its proper divisors (366157).

8421059 is a wasteful number, since it uses less digits than its factorization.

8421059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366156.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 8421059 is about 2901.9060977227. The cubic root of 8421059 is about 203.4490049243.

The spelling of 8421059 in words is "eight million, four hundred twenty-one thousand, fifty-nine".