135639361 has 16 divisors (see below), whose sum is σ = 160917120. Its totient is φ = 112705920.

The previous prime is 135639359. The next prime is 135639377. The reversal of 135639361 is 163936531.

It is a cyclic number.

It is not a de Polignac number, because 135639361 - 2¹ = 135639359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135639361.

It is not an unprimeable number, because it can be changed into a prime (135639331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10125 + ... + 19333.

It is an arithmetic number, because the mean of its divisors is an integer number (10057320).

Almost surely, 2^135639361 is an apocalyptic number.

135639361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135639361 is a deficient number, since it is larger than the sum of its proper divisors (25277759).

135639361 is a wasteful number, since it uses less digits than its factorization.

135639361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336.

The product of its digits is 43740, while the sum is 37.

The square root of 135639361 is about 11646.4312559685. The cubic root of 135639361 is about 513.8013547526.

The spelling of 135639361 in words is "one hundred thirty-five million, six hundred thirty-nine thousand, three hundred sixty-one".