117709129 has 2 divisors, whose sum is σ = 117709130. Its totient is φ = 117709128.

The previous prime is 117709079. The next prime is 117709153. The reversal of 117709129 is 921907711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59644729 + 58064400 = 7723^2 + 7620^2 .

It is an emirp because it is prime and its reverse (921907711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117709129 - 2⁷ = 117709001 is a prime.

It is not a weakly prime, because it can be changed into another prime (117709159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58854564 + 58854565.

It is an arithmetic number, because the mean of its divisors is an integer number (58854565).

Almost surely, 2^117709129 is an apocalyptic number.

It is an amenable number.

117709129 is a deficient number, since it is larger than the sum of its proper divisors (1).

117709129 is an equidigital number, since it uses as much as digits as its factorization.

117709129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 37.

The square root of 117709129 is about 10849.3838073874. The cubic root of 117709129 is about 490.0834635002.

The spelling of 117709129 in words is "one hundred seventeen million, seven hundred nine thousand, one hundred twenty-nine".