135489785 has 4 divisors (see below), whose sum is σ = 162587748. Its totient is φ = 108391824.

The previous prime is 135489751. The next prime is 135489787. The reversal of 135489785 is 587984531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77668969 + 57820816 = 8813^2 + 7604^2 .

It is a cyclic number.

It is not a de Polignac number, because 135489785 - 2⁶ = 135489721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135489787) 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, 13548974 + ... + 13548983.

It is an arithmetic number, because the mean of its divisors is an integer number (40646937).

Almost surely, 2^135489785 is an apocalyptic number.

It is an amenable number.

135489785 is a deficient number, since it is larger than the sum of its proper divisors (27097963).

135489785 is an equidigital number, since it uses as much as digits as its factorization.

135489785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27097962.

The product of its digits is 1209600, while the sum is 50.

The square root of 135489785 is about 11640.0079467327. The cubic root of 135489785 is about 513.6124208576.

The spelling of 135489785 in words is "one hundred thirty-five million, four hundred eighty-nine thousand, seven hundred eighty-five".