117144866 has 4 divisors (see below), whose sum is σ = 175717302. Its totient is φ = 58572432.

The previous prime is 117144851. The next prime is 117144869. The reversal of 117144866 is 668441711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 668441711 = 7 ⋅95491673.

It can be written as a sum of positive squares in only one way, i.e., 105781225 + 11363641 = 10285^2 + 3371^2 .

It is not an unprimeable number, because it can be changed into a prime (117144869) 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, 29286215 + ... + 29286218.

Almost surely, 2^117144866 is an apocalyptic number.

117144866 is a deficient number, since it is larger than the sum of its proper divisors (58572436).

117144866 is an equidigital number, since it uses as much as digits as its factorization.

117144866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58572435.

The product of its digits is 32256, while the sum is 38.

The square root of 117144866 is about 10823.3481880608. The cubic root of 117144866 is about 489.2991034263.

The spelling of 117144866 in words is "one hundred seventeen million, one hundred forty-four thousand, eight hundred sixty-six".