135398 has 4 divisors (see below), whose sum is σ = 203100. Its totient is φ = 67698.

The previous prime is 135391. The next prime is 135403. The reversal of 135398 is 893531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893531 = 443 ⋅2017.

It is a Curzon number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 135398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135391) by changing a digit.

135398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33848 + ... + 33851.

It is an arithmetic number, because the mean of its divisors is an integer number (50775).

2¹³⁵³⁹⁸ is an apocalyptic number.

135398 is a deficient number, since it is larger than the sum of its proper divisors (67702).

135398 is an equidigital number, since it uses as much as digits as its factorization.

135398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67701.

The product of its digits is 3240, while the sum is 29.

The square root of 135398 is about 367.9646722173. The cubic root of 135398 is about 51.3496415642.

The spelling of 135398 in words is "one hundred thirty-five thousand, three hundred ninety-eight".