117889727 has 8 divisors (see below), whose sum is σ = 122139840. Its totient is φ = 113652000.

The previous prime is 117889721. The next prime is 117889741. The reversal of 117889727 is 727988711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117889727 - 2⁶ = 117889663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117889721) 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 7 ways as a sum of consecutive naturals, for example, 19073 + ... + 24485.

It is an arithmetic number, because the mean of its divisors is an integer number (15267480).

Almost surely, 2^117889727 is an apocalyptic number.

117889727 is a deficient number, since it is larger than the sum of its proper divisors (4250113).

117889727 is an equidigital number, since it uses as much as digits as its factorization.

117889727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6193.

The product of its digits is 395136, while the sum is 50.

The square root of 117889727 is about 10857.7035785658. The cubic root of 117889727 is about 490.3339761195. Note that the first 3 decimals are identical.

The spelling of 117889727 in words is "one hundred seventeen million, eight hundred eighty-nine thousand, seven hundred twenty-seven".