117839878 has 16 divisors (see below), whose sum is σ = 190592640. Its totient is φ = 54320256.

The previous prime is 117839867. The next prime is 117839893. The reversal of 117839878 is 878938711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23083 + ... + 27721.

It is an arithmetic number, because the mean of its divisors is an integer number (11912040).

Almost surely, 2^117839878 is an apocalyptic number.

117839878 is a deficient number, since it is larger than the sum of its proper divisors (72752762).

117839878 is a wasteful number, since it uses less digits than its factorization.

117839878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5631.

The product of its digits is 677376, while the sum is 52.

The square root of 117839878 is about 10855.4077767719. The cubic root of 117839878 is about 490.2648547325.

The spelling of 117839878 in words is "one hundred seventeen million, eight hundred thirty-nine thousand, eight hundred seventy-eight".