8955557879 has 2 divisors, whose sum is σ = 8955557880. Its totient is φ = 8955557878.

The previous prime is 8955557873. The next prime is 8955557917. The reversal of 8955557879 is 9787555598.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8955557879 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8955557873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4477778939 + 4477778940.

It is an arithmetic number, because the mean of its divisors is an integer number (4477778940).

Almost surely, 2^8955557879 is an apocalyptic number.

8955557879 is a deficient number, since it is larger than the sum of its proper divisors (1).

8955557879 is an equidigital number, since it uses as much as digits as its factorization.

8955557879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760000, while the sum is 68.

The square root of 8955557879 is about 94633.8093864978. The cubic root of 8955557879 is about 2076.6543446107.

The spelling of 8955557879 in words is "eight billion, nine hundred fifty-five million, five hundred fifty-seven thousand, eight hundred seventy-nine".