117820393 has 2 divisors, whose sum is σ = 117820394. Its totient is φ = 117820392.

The previous prime is 117820369. The next prime is 117820403. The reversal of 117820393 is 393028711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84492864 + 33327529 = 9192^2 + 5773^2 .

It is a cyclic number.

It is not a de Polignac number, because 117820393 - 2²¹ = 115723241 is a prime.

It is not a weakly prime, because it can be changed into another prime (117820193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58910196 + 58910197.

It is an arithmetic number, because the mean of its divisors is an integer number (58910197).

Almost surely, 2^117820393 is an apocalyptic number.

It is an amenable number.

117820393 is a deficient number, since it is larger than the sum of its proper divisors (1).

117820393 is an equidigital number, since it uses as much as digits as its factorization.

117820393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 117820393 is about 10854.5102607165. The cubic root of 117820393 is about 490.2378312341.

The spelling of 117820393 in words is "one hundred seventeen million, eight hundred twenty thousand, three hundred ninety-three".