117179947 has 2 divisors, whose sum is σ = 117179948. Its totient is φ = 117179946.

The previous prime is 117179939. The next prime is 117179957. The reversal of 117179947 is 749971711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117179947 - 2³ = 117179939 is a prime.

It is a super-3 number, since 3×117179947³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 117179897 and 117179906.

It is not a weakly prime, because it can be changed into another prime (117179957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58589973 + 58589974.

It is an arithmetic number, because the mean of its divisors is an integer number (58589974).

Almost surely, 2^117179947 is an apocalyptic number.

117179947 is a deficient number, since it is larger than the sum of its proper divisors (1).

117179947 is an equidigital number, since it uses as much as digits as its factorization.

117179947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 46.

The square root of 117179947 is about 10824.9686835575. The cubic root of 117179947 is about 489.3479414997.

It can be divided in two parts, 1171 and 79947, that added together give a palindrome (81118).

The spelling of 117179947 in words is "one hundred seventeen million, one hundred seventy-nine thousand, nine hundred forty-seven".