8385021 has 12 divisors (see below), whose sum is σ = 12317760. Its totient is φ = 5494920.

The previous prime is 8385001. The next prime is 8385049. The reversal of 8385021 is 1205838.

It is a happy number.

It is not a de Polignac number, because 8385021 - 2⁵ = 8384989 is a prime.

8385021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8385001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7365 + ... + 8426.

It is an arithmetic number, because the mean of its divisors is an integer number (1026480).

Almost surely, 2^8385021 is an apocalyptic number.

It is an amenable number.

8385021 is a deficient number, since it is larger than the sum of its proper divisors (3932739).

8385021 is a wasteful number, since it uses less digits than its factorization.

8385021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15856 (or 15853 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 8385021 is about 2895.6900731950. The cubic root of 8385021 is about 203.1583693028.

The spelling of 8385021 in words is "eight million, three hundred eighty-five thousand, twenty-one".