117747689 has 2 divisors, whose sum is σ = 117747690. Its totient is φ = 117747688.

The previous prime is 117747677. The next prime is 117747709. The reversal of 117747689 is 986747711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 350464 = 10835^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 117747689 - 2²⁰ = 116699113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117747659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58873844 + 58873845.

It is an arithmetic number, because the mean of its divisors is an integer number (58873845).

Almost surely, 2^117747689 is an apocalyptic number.

It is an amenable number.

117747689 is a deficient number, since it is larger than the sum of its proper divisors (1).

117747689 is an equidigital number, since it uses as much as digits as its factorization.

117747689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 50.

The square root of 117747689 is about 10851.1607213238. The cubic root of 117747689 is about 490.1369726753.

The spelling of 117747689 in words is "one hundred seventeen million, seven hundred forty-seven thousand, six hundred eighty-nine".