117859213 has 2 divisors, whose sum is σ = 117859214. Its totient is φ = 117859212.

The previous prime is 117859187. The next prime is 117859237. The reversal of 117859213 is 312958711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117548964 + 310249 = 10842^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 117859213 - 2⁹ = 117858701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117853213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58929606 + 58929607.

It is an arithmetic number, because the mean of its divisors is an integer number (58929607).

Almost surely, 2^117859213 is an apocalyptic number.

It is an amenable number.

117859213 is a deficient number, since it is larger than the sum of its proper divisors (1).

117859213 is an equidigital number, since it uses as much as digits as its factorization.

117859213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 37.

The square root of 117859213 is about 10856.2983101976. The cubic root of 117859213 is about 490.2916672534.

The spelling of 117859213 in words is "one hundred seventeen million, eight hundred fifty-nine thousand, two hundred thirteen".