117243986 has 8 divisors (see below), whose sum is σ = 178275324. Its totient is φ = 57818880.

The previous prime is 117243983. The next prime is 117244007. The reversal of 117243986 is 689342711.

It can be written as a sum of positive squares in 2 ways, for example, as 98624761 + 18619225 = 9931^2 + 4315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117243983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401375 + ... + 401666.

Almost surely, 2^117243986 is an apocalyptic number.

117243986 is a deficient number, since it is larger than the sum of its proper divisors (61031338).

117243986 is an equidigital number, since it uses as much as digits as its factorization.

117243986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803116.

The product of its digits is 72576, while the sum is 41.

The square root of 117243986 is about 10827.9262095749. The cubic root of 117243986 is about 489.4370683703.

The spelling of 117243986 in words is "one hundred seventeen million, two hundred forty-three thousand, nine hundred eighty-six".