117288887 has 2 divisors, whose sum is σ = 117288888. Its totient is φ = 117288886.

The previous prime is 117288883. The next prime is 117288929. The reversal of 117288887 is 788882711.

It is a weak prime.

It is an emirp because it is prime and its reverse (788882711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117288887 - 2² = 117288883 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117288883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58644443 + 58644444.

It is an arithmetic number, because the mean of its divisors is an integer number (58644444).

Almost surely, 2^117288887 is an apocalyptic number.

117288887 is a deficient number, since it is larger than the sum of its proper divisors (1).

117288887 is an equidigital number, since it uses as much as digits as its factorization.

117288887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 401408, while the sum is 50.

The square root of 117288887 is about 10829.9993998153. Note that the first 3 decimals coincide. The cubic root of 117288887 is about 489.4995403990.

The spelling of 117288887 in words is "one hundred seventeen million, two hundred eighty-eight thousand, eight hundred eighty-seven".