117843784 has 16 divisors (see below), whose sum is σ = 222315120. Its totient is φ = 58559760.

The previous prime is 117843767. The next prime is 117843787. The reversal of 117843784 is 487348711.

It is a self number, because there is not a number n which added to its sum of digits gives 117843784.

It is not an unprimeable number, because it can be changed into a prime (117843787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43882 + ... + 46489.

It is an arithmetic number, because the mean of its divisors is an integer number (13894695).

Almost surely, 2^117843784 is an apocalyptic number.

It is an amenable number.

117843784 is a deficient number, since it is larger than the sum of its proper divisors (104471336).

117843784 is a wasteful number, since it uses less digits than its factorization.

117843784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90540 (or 90536 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 117843784 is about 10855.5876856115. The cubic root of 117843784 is about 490.2702715557.

The spelling of 117843784 in words is "one hundred seventeen million, eight hundred forty-three thousand, seven hundred eighty-four".