135137839 has 2 divisors, whose sum is σ = 135137840. Its totient is φ = 135137838.

The previous prime is 135137833. The next prime is 135137843. The reversal of 135137839 is 938731531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135137839 - 2¹⁵ = 135105071 is a prime.

It is a super-3 number, since 3×135137839³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135137833) 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, 67568919 + 67568920.

It is an arithmetic number, because the mean of its divisors is an integer number (67568920).

Almost surely, 2^135137839 is an apocalyptic number.

135137839 is a deficient number, since it is larger than the sum of its proper divisors (1).

135137839 is an equidigital number, since it uses as much as digits as its factorization.

135137839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 135137839 is about 11624.8801714254. The cubic root of 135137839 is about 513.1673182257.

The spelling of 135137839 in words is "one hundred thirty-five million, one hundred thirty-seven thousand, eight hundred thirty-nine".