117927913 has 2 divisors, whose sum is σ = 117927914. Its totient is φ = 117927912.

The previous prime is 117927911. The next prime is 117927941. The reversal of 117927913 is 319729711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86713344 + 31214569 = 9312^2 + 5587^2 .

It is a cyclic number.

It is not a de Polignac number, because 117927913 - 2¹ = 117927911 is a prime.

Together with 117927911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (117927911) 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, 58963956 + 58963957.

It is an arithmetic number, because the mean of its divisors is an integer number (58963957).

Almost surely, 2^117927913 is an apocalyptic number.

It is an amenable number.

117927913 is a deficient number, since it is larger than the sum of its proper divisors (1).

117927913 is an equidigital number, since it uses as much as digits as its factorization.

117927913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 40.

The square root of 117927913 is about 10859.4619111630. The cubic root of 117927913 is about 490.3869122331.

It can be divided in two parts, 1179 and 27913, that added together give a palindrome (29092).

The spelling of 117927913 in words is "one hundred seventeen million, nine hundred twenty-seven thousand, nine hundred thirteen".