8557879 has 4 divisors (see below), whose sum is σ = 9335880. Its totient is φ = 7779880.

The previous prime is 8557867. The next prime is 8557897. The reversal of 8557879 is 9787558.

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

It is a cyclic number.

It is not a de Polignac number, because 8557879 - 2¹¹ = 8555831 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8557819) 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, 388984 + ... + 389005.

It is an arithmetic number, because the mean of its divisors is an integer number (2333970).

Almost surely, 2^8557879 is an apocalyptic number.

8557879 is a deficient number, since it is larger than the sum of its proper divisors (778001).

8557879 is a wasteful number, since it uses less digits than its factorization.

8557879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778000.

The product of its digits is 705600, while the sum is 49.

The square root of 8557879 is about 2925.3852737716. The cubic root of 8557879 is about 204.5449274899.

The spelling of 8557879 in words is "eight million, five hundred fifty-seven thousand, eight hundred seventy-nine".