135909375 has 96 divisors (see below), whose sum is σ = 274982400. Its totient is φ = 58320000.

The previous prime is 135909359. The next prime is 135909419. The reversal of 135909375 is 573909531.

It is a happy number.

It is not a de Polignac number, because 135909375 - 2⁴ = 135909359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1246821 + ... + 1246929.

It is an arithmetic number, because the mean of its divisors is an integer number (2864400).

Almost surely, 2^135909375 is an apocalyptic number.

135909375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135909375 is an abundant number, since it is smaller than the sum of its proper divisors (139073025).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135909375 is an equidigital number, since it uses as much as digits as its factorization.

135909375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 127575, while the sum is 42.

The square root of 135909375 is about 11658.0176273670. The cubic root of 135909375 is about 514.1420660864.

The spelling of 135909375 in words is "one hundred thirty-five million, nine hundred nine thousand, three hundred seventy-five".