135473089 has 4 divisors (see below), whose sum is σ = 136035460. Its totient is φ = 134910720.

The previous prime is 135473083. The next prime is 135473113. The reversal of 135473089 is 980374531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980374531 = 313 ⋅3132187.

It can be written as a sum of positive squares in 2 ways, for example, as 108847489 + 26625600 = 10433^2 + 5160^2 .

It is a cyclic number.

It is not a de Polignac number, because 135473089 - 2³ = 135473081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135473081) 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 in 3 ways as a sum of consecutive naturals, for example, 280824 + ... + 281305.

It is an arithmetic number, because the mean of its divisors is an integer number (34008865).

Almost surely, 2^135473089 is an apocalyptic number.

It is an amenable number.

135473089 is a deficient number, since it is larger than the sum of its proper divisors (562371).

135473089 is an equidigital number, since it uses as much as digits as its factorization.

135473089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562370.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 135473089 is about 11639.2907429963. The cubic root of 135473089 is about 513.5913230181.

The spelling of 135473089 in words is "one hundred thirty-five million, four hundred seventy-three thousand, eighty-nine".