117164387 has 4 divisors (see below), whose sum is σ = 117297960. Its totient is φ = 117030816.

The previous prime is 117164363. The next prime is 117164417. The reversal of 117164387 is 783461711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117164387 - 2¹² = 117160291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117164387.

It is not an unprimeable number, because it can be changed into a prime (117164287) 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 in 3 ways as a sum of consecutive naturals, for example, 65462 + ... + 67227.

It is an arithmetic number, because the mean of its divisors is an integer number (29324490).

Almost surely, 2^117164387 is an apocalyptic number.

117164387 is a deficient number, since it is larger than the sum of its proper divisors (133573).

117164387 is an equidigital number, since it uses as much as digits as its factorization.

117164387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133572.

The product of its digits is 28224, while the sum is 38.

The square root of 117164387 is about 10824.2499509204. The cubic root of 117164387 is about 489.3262808225.

The spelling of 117164387 in words is "one hundred seventeen million, one hundred sixty-four thousand, three hundred eighty-seven".