117288929 has 2 divisors, whose sum is σ = 117288930. Its totient is φ = 117288928.

The previous prime is 117288887. The next prime is 117288959. The reversal of 117288929 is 929882711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114490000 + 2798929 = 10700^2 + 1673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117288929 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (117288959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58644464 + 58644465.

It is an arithmetic number, because the mean of its divisors is an integer number (58644465).

Almost surely, 2^117288929 is an apocalyptic number.

It is an amenable number.

117288929 is a deficient number, since it is larger than the sum of its proper divisors (1).

117288929 is an equidigital number, since it uses as much as digits as its factorization.

117288929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 47.

The square root of 117288929 is about 10830.0013388734. The cubic root of 117288929 is about 489.4995988274.

The spelling of 117288929 in words is "one hundred seventeen million, two hundred eighty-eight thousand, nine hundred twenty-nine".