117766889 has 2 divisors, whose sum is σ = 117766890. Its totient is φ = 117766888.

The previous prime is 117766879. The next prime is 117766927. The reversal of 117766889 is 988667711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 369664 = 10835^2 + 608^2 .

It is an emirp because it is prime and its reverse (988667711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117766889 - 2¹² = 117762793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117766889.

It is not a weakly prime, because it can be changed into another prime (117766829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58883444 + 58883445.

It is an arithmetic number, because the mean of its divisors is an integer number (58883445).

Almost surely, 2^117766889 is an apocalyptic number.

It is an amenable number.

117766889 is a deficient number, since it is larger than the sum of its proper divisors (1).

117766889 is an equidigital number, since it uses as much as digits as its factorization.

117766889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 53.

The square root of 117766889 is about 10852.0453832446. The cubic root of 117766889 is about 490.1636118914.

The spelling of 117766889 in words is "one hundred seventeen million, seven hundred sixty-six thousand, eight hundred eighty-nine".