135974539 has 4 divisors (see below), whose sum is σ = 136339456. Its totient is φ = 135609624.

The previous prime is 135974537. The next prime is 135974581. The reversal of 135974539 is 935479531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135974539 - 2¹ = 135974537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135974537) 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 in 3 ways as a sum of consecutive naturals, for example, 181899 + ... + 182644.

It is an arithmetic number, because the mean of its divisors is an integer number (34084864).

Almost surely, 2^135974539 is an apocalyptic number.

135974539 is a deficient number, since it is larger than the sum of its proper divisors (364917).

135974539 is an equidigital number, since it uses as much as digits as its factorization.

135974539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364916.

The product of its digits is 510300, while the sum is 46.

The square root of 135974539 is about 11660.8121072248. The cubic root of 135974539 is about 514.2242242657.

The spelling of 135974539 in words is "one hundred thirty-five million, nine hundred seventy-four thousand, five hundred thirty-nine".