135400959 has 6 divisors (see below), whose sum is σ = 195579176. Its totient is φ = 90267300.

The previous prime is 135400957. The next prime is 135400961. The reversal of 135400959 is 959004531.

135400959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (135400957) and next prime (135400961).

It is not a de Polignac number, because 135400959 - 2¹ = 135400957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135400957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7522267 + ... + 7522284.

Almost surely, 2^135400959 is an apocalyptic number.

135400959 is a deficient number, since it is larger than the sum of its proper divisors (60178217).

135400959 is a wasteful number, since it uses less digits than its factorization.

135400959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15044557 (or 15044554 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 135400959 is about 11636.1917739439. The cubic root of 135400959 is about 513.5001562802.

The spelling of 135400959 in words is "one hundred thirty-five million, four hundred thousand, nine hundred fifty-nine".