117850309 has 2 divisors, whose sum is σ = 117850310. Its totient is φ = 117850308.

The previous prime is 117850303. The next prime is 117850319. The reversal of 117850309 is 903058711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102616900 + 15233409 = 10130^2 + 3903^2 .

It is an emirp because it is prime and its reverse (903058711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117850309 - 2³ = 117850301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117850301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58925154 + 58925155.

It is an arithmetic number, because the mean of its divisors is an integer number (58925155).

Almost surely, 2^117850309 is an apocalyptic number.

It is an amenable number.

117850309 is a deficient number, since it is larger than the sum of its proper divisors (1).

117850309 is an equidigital number, since it uses as much as digits as its factorization.

117850309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 117850309 is about 10855.8882179212. Note that the first 3 decimals coincide. The cubic root of 117850309 is about 490.2793201294.

The spelling of 117850309 in words is "one hundred seventeen million, eight hundred fifty thousand, three hundred nine".