8855617879 has 2 divisors, whose sum is σ = 8855617880. Its totient is φ = 8855617878.

The previous prime is 8855617877. The next prime is 8855617931. The reversal of 8855617879 is 9787165588.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8855617879 - 2¹ = 8855617877 is a prime.

Together with 8855617877, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8855617879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8855617877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4427808939 + 4427808940.

It is an arithmetic number, because the mean of its divisors is an integer number (4427808940).

Almost surely, 2^8855617879 is an apocalyptic number.

8855617879 is a deficient number, since it is larger than the sum of its proper divisors (1).

8855617879 is an equidigital number, since it uses as much as digits as its factorization.

8855617879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33868800, while the sum is 64.

The square root of 8855617879 is about 94104.2925641546. The cubic root of 8855617879 is about 2068.9005868861.

The spelling of 8855617879 in words is "eight billion, eight hundred fifty-five million, six hundred seventeen thousand, eight hundred seventy-nine".