116985709 has 4 divisors (see below), whose sum is σ = 117151420. Its totient is φ = 116820000.

The previous prime is 116985703. The next prime is 116985719. The reversal of 116985709 is 907589611.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11923209 + 105062500 = 3453^2 + 10250^2 .

It is a cyclic number.

It is not a de Polignac number, because 116985709 - 2⁵ = 116985677 is a prime.

It is a super-2 number, since 2×116985709² = 27371312220465362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116985703) 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 in 3 ways as a sum of consecutive naturals, for example, 81792 + ... + 83209.

It is an arithmetic number, because the mean of its divisors is an integer number (29287855).

Almost surely, 2^116985709 is an apocalyptic number.

It is an amenable number.

116985709 is a deficient number, since it is larger than the sum of its proper divisors (165711).

116985709 is an equidigital number, since it uses as much as digits as its factorization.

116985709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165710.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 116985709 is about 10815.9932045097. The cubic root of 116985709 is about 489.0774101937.

The spelling of 116985709 in words is "one hundred sixteen million, nine hundred eighty-five thousand, seven hundred nine".