117841791 has 8 divisors (see below), whose sum is σ = 157186224. Its totient is φ = 78529280.

The previous prime is 117841777. The next prime is 117841817. The reversal of 117841791 is 197148711.

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 117841791 - 2⁶ = 117841727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117841741) 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, 2665 + ... + 15581.

It is an arithmetic number, because the mean of its divisors is an integer number (19648278).

Almost surely, 2^117841791 is an apocalyptic number.

117841791 is a deficient number, since it is larger than the sum of its proper divisors (39344433).

117841791 is a wasteful number, since it uses less digits than its factorization.

117841791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15961.

The product of its digits is 14112, while the sum is 39.

The square root of 117841791 is about 10855.4958891798. The cubic root of 117841791 is about 490.2675076872.

The spelling of 117841791 in words is "one hundred seventeen million, eight hundred forty-one thousand, seven hundred ninety-one".