8385921 has 12 divisors (see below), whose sum is σ = 12294672. Its totient is φ = 5506776.

The previous prime is 8385917. The next prime is 8385931. The reversal of 8385921 is 1295838.

It is not a de Polignac number, because 8385921 - 2² = 8385917 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8385931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6351 + ... + 7556.

It is an arithmetic number, because the mean of its divisors is an integer number (1024556).

Almost surely, 2^8385921 is an apocalyptic number.

It is an amenable number.

8385921 is a deficient number, since it is larger than the sum of its proper divisors (3908751).

8385921 is a wasteful number, since it uses less digits than its factorization.

8385921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13980 (or 13977 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 8385921 is about 2895.8454723966. The cubic root of 8385921 is about 203.1656376603.

The spelling of 8385921 in words is "eight million, three hundred eighty-five thousand, nine hundred twenty-one".