117912843 has 12 divisors (see below), whose sum is σ = 174473208. Its totient is φ = 76691040.

The previous prime is 117912829. The next prime is 117912853. The reversal of 117912843 is 348219711.

It is a happy number.

It is not a de Polignac number, because 117912843 - 2⁶ = 117912779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117912798 and 117912807.

It is not an unprimeable number, because it can be changed into a prime (117912853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159405 + ... + 160142.

It is an arithmetic number, because the mean of its divisors is an integer number (14539434).

Almost surely, 2^117912843 is an apocalyptic number.

117912843 is a deficient number, since it is larger than the sum of its proper divisors (56560365).

117912843 is a wasteful number, since it uses less digits than its factorization.

117912843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319594 (or 319591 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 117912843 is about 10858.7680240440. The cubic root of 117912843 is about 490.3660225065.

The spelling of 117912843 in words is "one hundred seventeen million, nine hundred twelve thousand, eight hundred forty-three".