117539437 has 2 divisors, whose sum is σ = 117539438. Its totient is φ = 117539436.

The previous prime is 117539431. The next prime is 117539441. The reversal of 117539437 is 734935711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102839881 + 14699556 = 10141^2 + 3834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117539437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117539437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117539431) 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, 58769718 + 58769719.

It is an arithmetic number, because the mean of its divisors is an integer number (58769719).

Almost surely, 2^117539437 is an apocalyptic number.

It is an amenable number.

117539437 is a deficient number, since it is larger than the sum of its proper divisors (1).

117539437 is an equidigital number, since it uses as much as digits as its factorization.

117539437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 117539437 is about 10841.5606348902. The cubic root of 117539437 is about 489.8478453026.

The spelling of 117539437 in words is "one hundred seventeen million, five hundred thirty-nine thousand, four hundred thirty-seven".