889777117 has 2 divisors, whose sum is σ = 889777118. Its totient is φ = 889777116.

The previous prime is 889777099. The next prime is 889777153. The reversal of 889777117 is 711777988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 806219236 + 83557881 = 28394^2 + 9141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-889777117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (889777157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444888558 + 444888559.

It is an arithmetic number, because the mean of its divisors is an integer number (444888559).

Almost surely, 2^889777117 is an apocalyptic number.

It is an amenable number.

889777117 is a deficient number, since it is larger than the sum of its proper divisors (1).

889777117 is an equidigital number, since it uses as much as digits as its factorization.

889777117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382976, while the sum is 55.

The square root of 889777117 is about 29829.1320188838. The cubic root of 889777117 is about 961.8198685758.

The spelling of 889777117 in words is "eight hundred eighty-nine million, seven hundred seventy-seven thousand, one hundred seventeen".