117838859 has 2 divisors, whose sum is σ = 117838860. Its totient is φ = 117838858.

The previous prime is 117838807. The next prime is 117838873. The reversal of 117838859 is 958838711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117838859 is a prime.

It is not a weakly prime, because it can be changed into another prime (117838159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58919429 + 58919430.

It is an arithmetic number, because the mean of its divisors is an integer number (58919430).

Almost surely, 2^117838859 is an apocalyptic number.

117838859 is a deficient number, since it is larger than the sum of its proper divisors (1).

117838859 is an equidigital number, since it uses as much as digits as its factorization.

117838859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 50.

The square root of 117838859 is about 10855.3608415382. The cubic root of 117838859 is about 490.2634415682.

The spelling of 117838859 in words is "one hundred seventeen million, eight hundred thirty-eight thousand, eight hundred fifty-nine".