8219859 has 8 divisors (see below), whose sum is σ = 11021760. Its totient is φ = 5448936.

The previous prime is 8219851. The next prime is 8219879. The reversal of 8219859 is 9589128.

It is a happy number.

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

It is not a de Polignac number, because 8219859 - 2³ = 8219851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8219859.

It is not an unprimeable number, because it can be changed into a prime (8219851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7117 + ... + 8190.

It is an arithmetic number, because the mean of its divisors is an integer number (1377720).

Almost surely, 2^8219859 is an apocalyptic number.

8219859 is a deficient number, since it is larger than the sum of its proper divisors (2801901).

8219859 is a wasteful number, since it uses less digits than its factorization.

8219859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15489.

The product of its digits is 51840, while the sum is 42.

The square root of 8219859 is about 2867.0296475621. The cubic root of 8219859 is about 201.8156259683.

The spelling of 8219859 in words is "eight million, two hundred nineteen thousand, eight hundred fifty-nine".