116989985 has 8 divisors (see below), whose sum is σ = 160443456. Its totient is φ = 80221680.

The previous prime is 116989981. The next prime is 116989991. The reversal of 116989985 is 589989611.

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

It is not a de Polignac number, because 116989985 - 2² = 116989981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 116989985.

It is not an unprimeable number, because it can be changed into a prime (116989981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671251 + ... + 1671320.

It is an arithmetic number, because the mean of its divisors is an integer number (20055432).

Almost surely, 2^116989985 is an apocalyptic number.

It is an amenable number.

116989985 is a deficient number, since it is larger than the sum of its proper divisors (43453471).

116989985 is an equidigital number, since it uses as much as digits as its factorization.

116989985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342583.

The product of its digits is 1399680, while the sum is 56.

The square root of 116989985 is about 10816.1908729460. The cubic root of 116989985 is about 489.0833689544.

The spelling of 116989985 in words is "one hundred sixteen million, nine hundred eighty-nine thousand, nine hundred eighty-five".