117709 has 2 divisors, whose sum is σ = 117710. Its totient is φ = 117708.

The previous prime is 117703. The next prime is 117721. The reversal of 117709 is 907711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96100 + 21609 = 310^2 + 147^2 .

It is a cyclic number.

It is not a de Polignac number, because 117709 - 2³ = 117701 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 1 + 7² + 7⁶ + 0 + 9 .

117709 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117701) 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 as a sum of consecutive naturals, namely, 58854 + 58855.

It is an arithmetic number, because the mean of its divisors is an integer number (58855).

2¹¹⁷⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

117709 is a deficient number, since it is larger than the sum of its proper divisors (1).

117709 is an equidigital number, since it uses as much as digits as its factorization.

117709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 441, while the sum is 25.

The square root of 117709 is about 343.0874524083. The cubic root of 117709 is about 49.0083284469.

The spelling of 117709 in words is "one hundred seventeen thousand, seven hundred nine".