117686398 has 4 divisors (see below), whose sum is σ = 176529600. Its totient is φ = 58843198.

The previous prime is 117686383. The next prime is 117686417. The reversal of 117686398 is 893686711.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29421598 + ... + 29421601.

It is an arithmetic number, because the mean of its divisors is an integer number (44132400).

Almost surely, 2^117686398 is an apocalyptic number.

117686398 is a deficient number, since it is larger than the sum of its proper divisors (58843202).

117686398 is an equidigital number, since it uses as much as digits as its factorization.

117686398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58843201.

The product of its digits is 435456, while the sum is 49.

The square root of 117686398 is about 10848.3361857937. The cubic root of 117686398 is about 490.0519145329.

The spelling of 117686398 in words is "one hundred seventeen million, six hundred eighty-six thousand, three hundred ninety-eight".