116909 has 12 divisors (see below), whose sum is σ = 139356. Its totient is φ = 97152.

The previous prime is 116903. The next prime is 116911. The reversal of 116909 is 909611.

It can be written as a sum of positive squares in 2 ways, for example, as 52900 + 64009 = 230^2 + 253^2 .

It is a de Polignac number, because none of the positive numbers 2^k-116909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5072 + ... + 5094.

It is an arithmetic number, because the mean of its divisors is an integer number (11613).

2¹¹⁶⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

116909 is a deficient number, since it is larger than the sum of its proper divisors (22447).

116909 is a wasteful number, since it uses less digits than its factorization.

116909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 116909 is about 341.9195811883. The cubic root of 116909 is about 48.8970488752.

The spelling of 116909 in words is "one hundred sixteen thousand, nine hundred nine".