117805147 has 2 divisors, whose sum is σ = 117805148. Its totient is φ = 117805146.

The previous prime is 117805133. The next prime is 117805169. The reversal of 117805147 is 741508711.

It is a weak prime.

It is an emirp because it is prime and its reverse (741508711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117805147 - 2¹¹ = 117803099 is a prime.

It is not a weakly prime, because it can be changed into another prime (117835147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58902573 + 58902574.

It is an arithmetic number, because the mean of its divisors is an integer number (58902574).

Almost surely, 2^117805147 is an apocalyptic number.

117805147 is a deficient number, since it is larger than the sum of its proper divisors (1).

117805147 is an equidigital number, since it uses as much as digits as its factorization.

117805147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 117805147 is about 10853.8079492867. The cubic root of 117805147 is about 490.2166846731.

The spelling of 117805147 in words is "one hundred seventeen million, eight hundred five thousand, one hundred forty-seven".