116121589 has 2 divisors, whose sum is σ = 116121590. Its totient is φ = 116121588.

The previous prime is 116121583. The next prime is 116121659. The reversal of 116121589 is 985121611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115390564 + 731025 = 10742^2 + 855^2 .

It is an emirp because it is prime and its reverse (985121611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116121589 - 2³ = 116121581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116121581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58060794 + 58060795.

It is an arithmetic number, because the mean of its divisors is an integer number (58060795).

Almost surely, 2^116121589 is an apocalyptic number.

It is an amenable number.

116121589 is a deficient number, since it is larger than the sum of its proper divisors (1).

116121589 is an equidigital number, since it uses as much as digits as its factorization.

116121589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 34.

The square root of 116121589 is about 10775.9727635142. The cubic root of 116121589 is about 487.8702358661.

The spelling of 116121589 in words is "one hundred sixteen million, one hundred twenty-one thousand, five hundred eighty-nine".