117539689 has 2 divisors, whose sum is σ = 117539690. Its totient is φ = 117539688.

The previous prime is 117539677. The next prime is 117539699. The reversal of 117539689 is 986935711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73874025 + 43665664 = 8595^2 + 6608^2 .

It is a cyclic number.

It is not a de Polignac number, because 117539689 - 2¹⁹ = 117015401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117539629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58769844 + 58769845.

It is an arithmetic number, because the mean of its divisors is an integer number (58769845).

Almost surely, 2^117539689 is an apocalyptic number.

It is an amenable number.

117539689 is a deficient number, since it is larger than the sum of its proper divisors (1).

117539689 is an equidigital number, since it uses as much as digits as its factorization.

117539689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 49.

The square root of 117539689 is about 10841.5722568270. The cubic root of 117539689 is about 489.8481953740.

The spelling of 117539689 in words is "one hundred seventeen million, five hundred thirty-nine thousand, six hundred eighty-nine".