135499539 has 8 divisors (see below), whose sum is σ = 206475520. Its totient is φ = 77428296.

The previous prime is 135499523. The next prime is 135499541. The reversal of 135499539 is 935994531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135499539 - 2⁴ = 135499523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135491539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3226159 + ... + 3226200.

It is an arithmetic number, because the mean of its divisors is an integer number (25809440).

Almost surely, 2^135499539 is an apocalyptic number.

135499539 is a deficient number, since it is larger than the sum of its proper divisors (70975981).

135499539 is an equidigital number, since it uses as much as digits as its factorization.

135499539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6452369.

The product of its digits is 656100, while the sum is 48.

The square root of 135499539 is about 11640.4269251604. The cubic root of 135499539 is about 513.6247456621.

The spelling of 135499539 in words is "one hundred thirty-five million, four hundred ninety-nine thousand, five hundred thirty-nine".