135406959 has 4 divisors (see below), whose sum is σ = 180542616. Its totient is φ = 90271304.

The previous prime is 135406951. The next prime is 135406987. The reversal of 135406959 is 959604531.

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

It is a cyclic number.

It is not a de Polignac number, because 135406959 - 2³ = 135406951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135406959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135406951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22567824 + ... + 22567829.

It is an arithmetic number, because the mean of its divisors is an integer number (45135654).

Almost surely, 2^135406959 is an apocalyptic number.

135406959 is a deficient number, since it is larger than the sum of its proper divisors (45135657).

135406959 is an equidigital number, since it uses as much as digits as its factorization.

135406959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45135656.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 135406959 is about 11636.4495873956. The cubic root of 135406959 is about 513.5077410503.

The spelling of 135406959 in words is "one hundred thirty-five million, four hundred six thousand, nine hundred fifty-nine".