117788847 has 16 divisors (see below), whose sum is σ = 180347520. Its totient is φ = 67629600.

The previous prime is 117788837. The next prime is 117788857. The reversal of 117788847 is 748887711.

It is an interprime number because it is at equal distance from previous prime (117788837) and next prime (117788857).

It is not a de Polignac number, because 117788847 - 2⁴ = 117788831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117788847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117788837) 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 15 ways as a sum of consecutive naturals, for example, 93304 + ... + 94557.

It is an arithmetic number, because the mean of its divisors is an integer number (11271720).

Almost surely, 2^117788847 is an apocalyptic number.

117788847 is a deficient number, since it is larger than the sum of its proper divisors (62558673).

117788847 is a wasteful number, since it uses less digits than its factorization.

117788847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187894.

The product of its digits is 702464, while the sum is 51.

The square root of 117788847 is about 10853.0570347714. The cubic root of 117788847 is about 490.1940741711.

The spelling of 117788847 in words is "one hundred seventeen million, seven hundred eighty-eight thousand, eight hundred forty-seven".