135336639 has 16 divisors (see below), whose sum is σ = 195082880. Its totient is φ = 83164320.

The previous prime is 135336637. The next prime is 135336647. The reversal of 135336639 is 936633531.

It is not a de Polignac number, because 135336639 - 2¹ = 135336637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135336597 and 135336606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135336637) 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, 29977 + ... + 34194.

It is an arithmetic number, because the mean of its divisors is an integer number (12192680).

Almost surely, 2^135336639 is an apocalyptic number.

135336639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

135336639 is a deficient number, since it is larger than the sum of its proper divisors (59746241).

135336639 is a wasteful number, since it uses less digits than its factorization.

135336639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64230.

The product of its digits is 131220, while the sum is 39.

The square root of 135336639 is about 11633.4276548230. The cubic root of 135336639 is about 513.4188334655.

The spelling of 135336639 in words is "one hundred thirty-five million, three hundred thirty-six thousand, six hundred thirty-nine".