117961847 has 2 divisors, whose sum is σ = 117961848. Its totient is φ = 117961846.

The previous prime is 117961843. The next prime is 117961853. The reversal of 117961847 is 748169711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117961847 - 2² = 117961843 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 117961798 and 117961807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117961843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58980923 + 58980924.

It is an arithmetic number, because the mean of its divisors is an integer number (58980924).

Almost surely, 2^117961847 is an apocalyptic number.

117961847 is a deficient number, since it is larger than the sum of its proper divisors (1).

117961847 is an equidigital number, since it uses as much as digits as its factorization.

117961847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 44.

The square root of 117961847 is about 10861.0242150545. The cubic root of 117961847 is about 490.4339443371.

The spelling of 117961847 in words is "one hundred seventeen million, nine hundred sixty-one thousand, eight hundred forty-seven".