117391669 has 2 divisors, whose sum is σ = 117391670. Its totient is φ = 117391668.

The previous prime is 117391667. The next prime is 117391711. The reversal of 117391669 is 966193711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93508900 + 23882769 = 9670^2 + 4887^2 .

It is a cyclic number.

It is not a de Polignac number, because 117391669 - 2¹ = 117391667 is a prime.

It is a super-2 number, since 2×117391669² = 27561607901211122, which contains 22 as substring.

Together with 117391667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117391667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58695834 + 58695835.

It is an arithmetic number, because the mean of its divisors is an integer number (58695835).

Almost surely, 2^117391669 is an apocalyptic number.

It is an amenable number.

117391669 is a deficient number, since it is larger than the sum of its proper divisors (1).

117391669 is an equidigital number, since it uses as much as digits as its factorization.

117391669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 43.

The square root of 117391669 is about 10834.7436056420. The cubic root of 117391669 is about 489.6424839006.

The spelling of 117391669 in words is "one hundred seventeen million, three hundred ninety-one thousand, six hundred sixty-nine".